Merge branch 'color-print'

README.md

@@ -65,7 +65,11 @@ The client uses the following flags
 -ip <ip:port>    - specify alternate server destination
 -l               - list all quotes
 -r [i]           - remove; may be run with or without argument
+-e [i]           - edit; may be run with or without argument
+-c               - list color format specifiers with examples
 -s <i>           - specify the size of the receipt buffer
+-v               - display version and exit
+-vv              - display version and about info and exit
 ```
 The server uses the following flags
 ``` sh
@@ -79,8 +83,6 @@ The server uses the following flags
 - Log all uses/transaction data each day
 - Request, send, and receive the logfile
 - User-specific quotes/quotefiles
-- Colored printing and coloring quotes
-- Edit quotes
 
 [golang]: <https://go.dev/doc/install>
 [just]: <https://github.com/casey/just>

client.go

@@ -1,7 +1,7 @@
 // =============================================================================
 // Auth: alex
 // File: client.go
-// Revn: 01-09-2025  4.0
+// Revn: 09-16-2026  4.0.0
 // Func: ask server for a message of the day quote
 //
 // TODO: remove ioutil import
@@ -24,32 +24,53 @@
 //             imported check() from soary
 // 09-29-2023: commented handle()
 //*10-02-2023: commented main(), and friends
-//*10-05-2023: /remove/ works
+//#10-05-2023: /remove/ works
 //             removed -d flag
 //             commented
 // 06-12-2024: began added PWFT to /la/
 // 06-13-2024: finished adding PWFT to /la/
 //             commented PWFT stuff
 //             STARTED BYTE-BASED PWFT REWRITE
-//*06-14-2024: finished byte-based PWFT rewrite
+//#06-14-2024: finished byte-based PWFT rewrite
 //             commented
 //*01-09-2025: basically just copy/pasted from /la/ into /r1/, /r2/
+// 06-21-2026: copied v and vv flags from server
+//             copied /edit/ switch case from /remove/ in main()
+//             pulled /sa/ and /qa/ into separate functions
+// 09-03-2026: renamed in() -> inputNumber()
+//             copied in() and removed all logic
+//             added firstEdit() and secondEdit() and /e1/ and /e2/
+// 09-04-2026: rewrote in() with bufio instead of scanln
+//#09-06-2026: fixed blank message error in secondEdit()
+//             comments
+// 09-07-2026: added fatih/color import
+//             rewrote quoteAnswer() to handle coloring escape
+//              sequences
+//*09-12-2026: commented quoteAnswer()
+//*09-15-2026: added -c flag and color code example printing
+//             changed edit command to be add and then remove instead
+//              of remove and then add, fixing server OOB error when
+//              editting only quote in list
+//#09-15-2026: finished pretty print implementation
+//             made listAnswer() print list with color print
 //
 // =============================================================================
 
 package main
 
-import ( 
+import (
-    "io"        // io.EOF
+    "bufio"                     // NewReader, ReadString
-    "io/ioutil" // ReadFile
+    "io"                        // io.EOF
-    "flag"      // BoolVar, StringVar, Parse
+    "io/ioutil"                 // ReadFile
-    "fmt"       // Println
+    "flag"                      // BoolVar, StringVar, Parse
-    "math/rand" // NewSource, New, Intn, *rand.Rand
+    "fmt"                       // Println
-    "net"       // ResolveTCPAddr, DialTCP, conn.Write,Read
+    "math/rand"                 // NewSource, New, Intn, *rand.Rand
-    "os"        // Exit, Create
+    "net"                       // ResolveTCPAddr, DialTCP, conn.Write,Read
-    "strconv"   // Atoi, Itoa
+    "os"                        // Exit, Create, Stdin
-    "strings"   // Split
+    "strconv"                   // Atoi, Itoa
-    "time"      // Now, UnixNano
+    "strings"                   // Split
+    "time"                      // Now, UnixNano
+    "github.com/fatih/color"    // color.New, Printf, Println
 )
 
 
@@ -85,20 +106,37 @@ func check( err error ) {
 
 // get user input
 func in( prompt string ) string {
+    // instantiate reader
+    reader := bufio.NewReader( os.Stdin )
     fmt.Print( prompt )     // print user prompt
-    var input string        // declare var to hold user input
+    // get user input, read until newline
-    fmt.Scanln( &input )    // get user input
+    input, _ := reader.ReadString( '\n' )
+    // strip trailing newline before returning
+    return input[:len( input ) - 1]
+}
+
+
+// get user input, must be a number
+func inputNumber( prompt string ) string {
+    // get user input
+    //input := in( prompt )
+    fmt.Print( prompt )
+    var input string
+    fmt.Scanln( &input )
+
     // try to convert to an int, discard results
     _, err := strconv.Atoi( input )
     // if there was an error, user didn't input an int
     if err != nil {
         // warn user against this
         fmt.Println( "Input must be a number" )
-        input = in( prompt )    // try to get user input again
+        // try to get user input again
+        //XXX input = in( prompt )
+        fmt.Println( "err: ", err.Error() )
         // this, like handle() calling handle(), seems like a super
         // bad idea, stack-wise...
     }
-    // once user has properly inputted a number, return string of num
+   // once user has properly inputted a number, return string of num
     return input
 }
 
@@ -113,7 +151,7 @@ func seed() *rand.Rand {
 
 
 // get a random number
-func draw() string {
+func draw( qsize int ) string {
     rn := seed()            // get a random seed
     r := rn.Intn( qsize )   // get a random number using seed
     // convert random number to ascii, because converting
@@ -123,6 +161,344 @@ func draw() string {
 }
 
 
+// respond to size answer
+func sizeAnswer( subcom []string ) string {
+    // subcom should contain only a size
+    // convert to int, catch error
+    size, err := strconv.Atoi( subcom[0] )
+
+    if err != nil {     // if int conversion failed ( for some reason )
+        os.Exit( 1 )    // just quit
+        // TODO make exit codes unique, document them
+    }
+
+    // draw a random number, add to quote request
+    return "qr@" + draw( size )
+
+}
+
+
+// receive quote, print
+func quoteAnswer( subcom []string ) string {
+
+    // split subcommand over spaces
+    words := strings.Split( subcom[0], " " )
+
+    // default text is white
+    c := color.New( color.FgWhite )
+    for _, w := range words {
+        // if first char is normal color escape character
+        if string( w[0] ) == "$" {
+            // see which color is requested
+            switch string( w[1] ) {
+                case "1":   // 1 -> red
+                    c = color.New( color.FgRed )
+                case "2":   // 2 -> yellow
+                    c = color.New( color.FgYellow )
+                case "3":   // 3 -> green
+                    c = color.New( color.FgGreen )
+                case "4":   // 4 -> blue
+                    c = color.New( color.FgBlue )
+                case "5":   // 5 -> cyan
+                    c = color.New( color.FgCyan )
+                case "6":   // 6 -> magenta
+                    c = color.New( color.FgMagenta )
+                case "7":   // 7 -> black
+                    c = color.New( color.FgBlack )
+                case "0":   // 0 -> white again
+                    c = color.New( color.FgWhite )
+                default:
+                    // none of these, continue with the last color
+            }
+            // color chosen, print string with trailing space, minus
+            // first two characters
+            c.Printf( "%s ", w[2:] )
+        // if first char is bold color escape character
+        } else if string( w[0] ) == "#" {
+            // see which color is requested
+            switch string( w[1] ) {
+                case "1":   // 1 -> red
+                    c = color.New( color.FgRed, color.Bold )
+                case "2":   // 2 -> yellow
+                    c = color.New( color.FgYellow, color.Bold )
+                case "3":   // 3 -> green
+                    c = color.New( color.FgGreen, color.Bold )
+                case "4":   // 4 -> blue
+                    c = color.New( color.FgBlue, color.Bold )
+                case "5":   // 5 -> cyan
+                    c = color.New( color.FgCyan, color.Bold )
+                case "6":   // 6 -> magenta
+                    c = color.New( color.FgMagenta, color.Bold )
+                case "7":   // 7 -> black
+                    c = color.New( color.FgBlack, color.Bold )
+                case "0":   // 0 -> white again
+                    c = color.New( color.FgWhite, color.Bold )
+                default:
+                    // none of these, continue with the last color
+            }
+            // color chosen, print string with trailing space, minus
+            // first two characters
+            c.Printf( "%s ", w[2:] )
+        } else {    // TODO add if for if w[0] is "\"
+            // using the currently selected color, print the next work
+            // and a trailing space
+            c.Printf( "%s ", w )
+        }
+    }
+
+    c.Println()     // print final newline
+
+    //fmt.Println( subcom[0] )    // whole-ass just print quote
+    return "te@success"         // set transaction end message
+}
+
+
+// add answer
+func addAnswer( subcom []string ) string {
+
+    var resp string = "te@"
+
+    // if server says add succeeded
+    if subcom[0] == "success" {
+        fmt.Println( "Add successful" )     // print success
+        resp = resp + "success" // set transaction end message
+                                // if server says add failed
+    } else if subcom[0] == "error" {
+        fmt.Println( "Add failed" )     // print fail
+        resp = resp + "error"   // set transaction end message
+                                // unknown status message
+    } else {
+        // print unknown status
+        fmt.Println( "Unknown status code: " + subcom[0] )
+        // TODO should this be unknown instead of error?
+        resp = resp + "error"   // set transaction end message
+    }
+    return resp
+}
+
+
+// receive answer to list
+func listAnswer( subcom []string ) string {
+
+    var resp string
+
+    if len( subcom ) > 1 {      // multistage send condition
+        if subcom[0] == "X" {   // final message
+            // TODO update
+            // read entire temp storage file as byte array
+            tfile, err := ioutil.ReadFile( "temp.q" )
+            check( err )    // check read for errors
+            // cast file to string, concat with recv'd string
+            tstr := string( tfile ) + subcom[1]
+            // split concat over newlines, separating quotes
+            tlist := strings.Split( tstr, "\n" )
+            // iterate over array, printing each quote
+            for p, v := range tlist {
+                fmt.Println( p + 1, "\t", v )
+            }
+            // delete temp storage file
+            err = os.Remove( "temp.q" )
+            check( err )    // check rm for errors
+            resp = "te@X"   // successful response message
+        } else {    // first or intermediate message
+            // open temp quote storage file, creating if
+            // necessary, with write-only permissions, in
+            // append mode, wr u perm, r g/w perm
+            f, err := os.OpenFile( "temp.q", os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0644 )
+            check( err )    // check file open for errors
+            // write received message to file, keeping track
+            // of bytes written
+            n, err := f.WriteString( subcom[1] )
+            check( err )    // check file write for errors
+            // cast bytes already written field to int
+            b, err := strconv.Atoi( subcom[0] )
+            check( err )    // check cast for errors
+            // add bytes just written to bytes already written, cast
+            // back to string, and append to response variable
+            resp = "lr@" + strconv.Itoa( b + n )
+        }
+    } else {
+        // split recv'd message over \n, create quote list
+        quotes := strings.Split( subcom[0], "\n" )
+        for p, v := range quotes {      // iterate over quotes
+            // print num of quote, followed by that quote
+            fmt.Print( p + 1, "\t" )
+            quoteAnswer( []string{ v } )
+        }
+        resp = "te@success"     // set transaction end message
+    }
+    return resp
+}
+
+
+// first round edit request
+func firstEdit( subcom []string ) string {
+
+    var resp string
+
+    if len( subcom ) > 1 {      // multistage send condition
+        if subcom[0] == "X" {   // final message
+            // TODO update
+            // read entire temp storage file as byte array
+            tfile, err := ioutil.ReadFile( "temp.q" )
+            check( err )    // check read for errors
+            // cast file to string, concat with recv'd string
+            tstr := string( tfile ) + subcom[1]
+            // split concat over newlines, separating quotes
+            tlist := strings.Split( tstr, "\n" )
+            // iterate over array, printing each quote
+            for p, v := range tlist {
+                fmt.Println( p + 1, "\t", v )
+            }
+            // delete temp storage file
+            err = os.Remove( "temp.q" )
+            check( err )    // check rm for errors
+            // ask user which quote to remove
+            resp = "e2@" + inputNumber( "\n-> " )
+        } else {    // first or intermediate message
+            // open temp quote storage file, creating if
+            // necessary, with write-only permissions, in
+            // append mode, wr u perm, r g/w perm
+            f, err := os.OpenFile( "temp.q", os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0644 )
+            check( err )    // check file open for errors
+            // write received message to file, keeping track
+            // of bytes written
+            n, err := f.WriteString( subcom[1] )
+            check( err )    // check file write for errors
+            // cast bytes already written field to int
+            b, err := strconv.Atoi( subcom[0] )
+            check( err )    // check cast for errors
+            // add bytes just written to bytes already written, cast
+            // back to string, and append to response variable
+            resp = "e1@" + strconv.Itoa( b + n )
+        }
+    } else {
+        // split recv'd message over \n, create quote list
+        quotes := strings.Split( subcom[0], "\n" )
+        for p, v := range quotes {      // iterate over quotes
+            // print num of quote, followed by that quote
+            fmt.Println( p + 1, "\t", v )
+        }
+        // ask user which quote to edit
+        resp = "e2@" + inputNumber( "\n-> " )
+    }
+    return resp
+}
+
+
+// second round edit request ( and also third, technically )
+func secondEdit( subcom []string ) string {
+    // success message and edit request pt2 come to the same place
+    if subcom[0] == "success" {
+        // print success and end transaction
+        fmt.Println( "Edit successful" )
+        return "te@success"
+    }
+
+    // edit command is an add and then a removal
+    var resp string
+    resp = "cr@ar@"
+
+    fmt.Println( "as is:   " + subcom[1] )
+    fmt.Print(   "preview: " )      // show raw of current quote
+    _ = quoteAnswer( subcom[1:] )   // display quote properly
+
+    // server response is user input for new quote
+    resp = resp + in( "\nupdate -> " )
+    // and position of old quote to be removed
+    resp = resp + "@r2@" + subcom[0]
+    return resp
+}
+
+
+// list of all quotes, pick which to remove
+func firstRemove( subcom []string ) string {
+    // the idea is that if the user doesn't specify which quote to
+    // remove, list all quotes and let the user choose the quote
+    // to remove. There was probably a way to handle this a little
+    // more simply, but this, I feel, has some nuance to it that I
+    // actually like
+
+    var resp string
+
+    if len( subcom ) > 1 {      // multistage send condition
+        if subcom[0] == "X" {   // final message
+            // TODO update
+            // read entire temp storage file as byte array
+            tfile, err := ioutil.ReadFile( "temp.q" )
+            check( err )    // check read for errors
+            // cast file to string, concat with recv'd string
+            tstr := string( tfile ) + subcom[1]
+            // split concat over newlines, separating quotes
+            tlist := strings.Split( tstr, "\n" )
+            // iterate over array, printing each quote
+            for p, v := range tlist {
+                fmt.Println( p + 1, "\t", v )
+            }
+            // delete temp storage file
+            err = os.Remove( "temp.q" )
+            check( err )    // check rm for errors
+            // ask user which quote to remove
+            resp = "r2@" + inputNumber( "\n-> " )
+        } else {    // first or intermediate message
+            // open temp quote storage file, creating if
+            // necessary, with write-only permissions, in
+            // append mode, wr u perm, r g/w perm
+            f, err := os.OpenFile( "temp.q", os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0644 )
+            check( err )    // check file open for errors
+            // write received message to file, keeping track
+            // of bytes written
+            n, err := f.WriteString( subcom[1] )
+            check( err )    // check file write for errors
+            // cast bytes already written field to int
+            b, err := strconv.Atoi( subcom[0] )
+            check( err )    // check cast for errors
+            // add bytes just written to bytes already written, cast
+            // back to string, and append to response variable
+            resp = "r1@" + strconv.Itoa( b + n )
+        }
+    } else {
+        // split recv'd message over \n, create quote list
+        quotes := strings.Split( subcom[0], "\n" )
+        for p, v := range quotes {      // iterate over quotes
+            // print num of quote, followed by that quote
+            fmt.Println( p + 1, "\t", v )
+        }
+        // ask user which quote to remove
+        resp = "r2@" + inputNumber( "\n-> " )
+    }
+    return resp
+}
+
+
+// second remove, determine if success or failure
+func secondRemove( subcom []string ) string {
+    var resp string
+    // if server says remove succeeded
+    if subcom[0] == "success" {
+        fmt.Println( "Remove successful\n" )    // success
+        // list all quotes to validate remove succeeded
+        // TODO should /aa/ also make /lr/ before /te/?
+        resp = "lr@init"    // set transaction end message
+    } else if subcom[0] == "error" {   // if server says remove failed
+        fmt.Println( "Remove failed" )      // print failure
+        resp = "te@error"   // set transaction end message
+    } else {    // if unknown status message
+        // TODO there's a known issue where if the buffer
+        // size ( -s ) is less than 10, on the server side,
+        // 'success' will get cut off ( r2@success )
+        // and /r2/ will end up down here despite having
+        // actually worked correctly, and will not display the
+        // list, as it should on success
+        // print unknown status
+        fmt.Println( "Unknown error code: " + subcom[0] )
+        // TODO should this be unknown instead of error?
+        resp = "te@error"   // set transaction end message
+    }
+    return resp
+}
+
+
 // get server response and print
 func handle( conn net.Conn ) {
 
@@ -135,176 +511,37 @@ func handle( conn net.Conn ) {
     check( err )    // check for errors
 
     // split recv'd message over @, separate header from message
-    msg := strings.Split( string( buffer[:n] ), "@" )
+    message := strings.Split( string( buffer[:n] ), "@" )
+    command := message[0]
 
     var resp string     // declare response variable
-    switch msg[0] {     // switch/case over the header
+    switch command {     // switch/case over the header
         // if message is...
         case "sa":      // /sa/, size answer
-            // convert back half to int, catch error
+            resp = sizeAnswer( message[1:] )
-            size, nerr := strconv.Atoi( msg[1] )
-            if nerr == nil {    // if there was no error
-                qsize = size    // set size global to recv'd size
-            } else {
-                // if int conversion failed, just quit
-                // TODO make more robust
-                os.Exit( 1 )
-            }
-            req := draw()           // draw a random number
-            resp = "qr@" + req      // create quote query with rng
-        case "ba":      // /ba/, bad answer
-            // TODO create server-side, and handle client-side
-            fmt.Println( "error in " + msg[1] + ": " + msg[2] )
-            resp = "te@error"   // set transaction end message
         case "qa":      // /qa/, quote answer
-            fmt.Println( msg[1] )   // whole-ass just print quote
+            resp = quoteAnswer( message[1:] )
-            resp = "te@success"     // set transaction end message
-        case "la":      // /la/, list answer
-            if len( msg ) > 2 {     // multistage send condition
-                if msg[1] == "X" {      // final message
-                    // TODO update
-                    // read entire temp storage file as byte array
-                    tfile, err := ioutil.ReadFile( "temp.q" )
-                    check( err )    // check read for errors
-                    // cast file to string, concat with recv'd string
-                    tstr := string( tfile ) + msg[2]
-                    // split concat over newlines, separating quotes
-                    tlist := strings.Split( tstr, "\n" )
-                    // iterate over array, printing each quote
-                    for p, v := range tlist {
-                        fmt.Println( p + 1, "\t", v )
-                    }
-                    // delete temp storage file
-                    err = os.Remove( "temp.q" )
-                    check( err )    // check rm for errors
-                    resp = "te@X"   // successful response message
-                } else {    // first or intermediate message
-                    // open temp quote storage file, creating if
-                    // necessary, with write-only permissions, in
-                    // append mode, wr u perm, r g/w perm
-                    f, err := os.OpenFile( "temp.q", os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0644 )
-                    check( err )    // check file open for errors
-                    // write received message to file, keeping track
-                    // of bytes written
-                    n, err = f.WriteString( msg[2] )
-                    check( err )    // check file write for errors
-                    // cast bytes already written field to int
-                    b, err := strconv.Atoi( msg[1] )
-                    check( err )    // check cast for errors
-                    // add bytes just written to bytes already
-                    // written, cast back to string, and append to
-                    // response variable
-                    resp = "lr@" + strconv.Itoa( b + n )
-                }
-            } else {
-                // split recv'd message over \n, create quote list
-                quotes := strings.Split( msg[1], "\n" )
-                for p, v := range quotes {      // iterate over quotes
-                    // print num of quote, followed by that quote
-                    fmt.Println( p + 1, "\t", v )
-                }
-                resp = "te@success"     // set transaction end message
-            }
         case "aa":      // /aa/, add answer
-            // if server says add succeeded
+            resp = addAnswer( message[1:] )
-            if msg[1] == "success" {
+        case "la":      // /la/, list answer
-                fmt.Println( "Add successful" )     // print success
+            resp = listAnswer( message[1:] )
-                resp = "te@success" // set transaction end message
+        case "e1":      // /e1/, edit quote ( first transaction )
-            // if server says add failed
+            resp = firstEdit( message[1:] )
-            } else if msg[1] == "error" {
+        case "e2":      // /e2/, edit quote ( second transaction )
-                fmt.Println( "Add failed" )     // print fail
+            resp = secondEdit( message[1:] )
-                resp = "te@error"   // set transaction end message
-            // unknown status message
-            } else {
-                // print unknown status
-                fmt.Println( "Unknown status code: " + msg[1] )
-                // TODO should this be unknown instead of error?
-                resp = "te@error"   // set transaction end message
-            }
         case "r1":      // /r1/, remove ( first transaction )
-        // the idea is that if the user doesn't specify which quote to
+            resp = firstRemove( message[1:] )
-        // remove, list all quotes and let the user choose the quote
-        // to remove. There was probably a way to handle this a little
-        // more simply, but this, I feel, has some nuance to it that I
-        // actually like
-            // redo /r1/, list all quotes
-            // split recv'd message over newline to create quote list
-            if len( msg ) > 2 {     // multistage send condition
-                if msg[1] == "X" {      // final message
-                    // TODO update
-                    // read entire temp storage file as byte array
-                    tfile, err := ioutil.ReadFile( "temp.q" )
-                    check( err )    // check read for errors
-                    // cast file to string, concat with recv'd string
-                    tstr := string( tfile ) + msg[2]
-                    // split concat over newlines, separating quotes
-                    tlist := strings.Split( tstr, "\n" )
-                    // iterate over array, printing each quote
-                    for p, v := range tlist {
-                        fmt.Println( p + 1, "\t", v )
-                    }
-                    // delete temp storage file
-                    err = os.Remove( "temp.q" )
-                    check( err )    // check rm for errors
-                    // ask user which quote to remove
-                    resp = "r2@" + in( "\n-> " )
-                } else {    // first or intermediate message
-                    // open temp quote storage file, creating if
-                    // necessary, with write-only permissions, in
-                    // append mode, wr u perm, r g/w perm
-                    f, err := os.OpenFile( "temp.q", os.O_WRONLY | os.O_APPEND | os.O_CREATE, 0644 )
-                    check( err )    // check file open for errors
-                    // write received message to file, keeping track
-                    // of bytes written
-                    n, err = f.WriteString( msg[2] )
-                    check( err )    // check file write for errors
-                    // cast bytes already written field to int
-                    b, err := strconv.Atoi( msg[1] )
-                    check( err )    // check cast for errors
-                    // add bytes just written to bytes already
-                    // written, cast back to string, and append to
-                    // response variable
-                    resp = "r1@" + strconv.Itoa( b + n )
-                }
-            } else {
-                // split recv'd message over \n, create quote list
-                quotes := strings.Split( msg[1], "\n" )
-                for p, v := range quotes {      // iterate over quotes
-                    // print num of quote, followed by that quote
-                    fmt.Println( p + 1, "\t", v )
-                }
-                // ask user which quote to remove
-                resp = "r2@" + in( "\n-> " )
-            }
         case "r2":      // /r2/, remove ( second transaction )
-            // if server says remove succeeded
+            resp = secondRemove( message[1:] )
-            if msg[1] == "success" {
-                fmt.Println( "Remove successful\n" )    // success
-                // list all quotes to validate remove succeeded
-                // TODO should /aa/ also make /lr/ before /te/?
-                resp = "lr@init"    // set transaction end message
-            // if server says remove failed
-            } else if msg[1] == "error" {
-                fmt.Println( "Remove failed" )      // print failure
-                resp = "te@error"   // set transaction end message
-            // if unknown status message
-            } else {
-                // TODO there's a known issue where if the buffer
-                // size ( -s ) is less than 10, on the server side,
-                // 'success' will get cut off ( r2@success )
-                // and /r2/ will end up down here despite having
-                // actually worked correctly, and with not display the
-                // list, as it should on success
-                // print unknown status
-                fmt.Println( "Unknown error code: " + msg[1] )
-                // TODO should this be unknown instead of error?
-                resp = "te@error"   // set transaction end message
-            }
         case "br":      // /br/, bad request
         // client has asked for something nonsensical
             // TODO write out to file
             fmt.Println( "Client sent a bad request" )
             resp = "te@error"       // set transaction end message
+        case "ba":      // /ba/, bad answer
+            // TODO create server-side, and handle client-side
+            fmt.Println( "error in " + message[1] + ": " + message[2] )
+            resp = "te@error"   // set transaction end message
         default:        // something undefined entirely
             // TODO write out to file
             //fmt.Println( "Message header not recognized" )
@@ -322,26 +559,97 @@ func handle( conn net.Conn ) {
 
 
 // globals
-var qsize int       // keep track of num of quotes
+//var qsize int       // keep track of num of quotes
 var conn net.Conn   // keep track of connection
 
-
 // global flag variables
 var add bool        // add new quotes to quote file ( on server )
 var remove bool     // remove quotes from quote file ( on server )
 var list bool       // request entire quote file from server
+var edit bool       // edit a pre-existing quote from quote file ( on server )
+var co bool         // list color codes
 var dest string     // provide a new destination ip and port
 var tsize int       // size of transmission buffer
+var VERS string         // version
 
 func main() {
 
+    var v bool          // version flag
+    var vv bool         // big version flag
+
     // define flags
-    flag.BoolVar( &add, "a", false, "add quote to list" )
+    flag.BoolVar( &add,     "a", false, "add quote to list" )
-    flag.BoolVar( &remove, "r", false, "remove quote from list" )
+    flag.BoolVar( &remove,  "r", false, "remove quote from list" )
-    flag.BoolVar( &list, "l", false, "print quote list" )
+    flag.BoolVar( &list,    "l", false, "print quote list" )
-    flag.StringVar( &dest, "ip", "127.0.0.1:1300", "ip:port of server" )
+    flag.BoolVar( &edit,    "e", false, "edit quote from list" )
-    flag.IntVar( &tsize, "s", 256, "transmission size ( bytes )" )
+    flag.BoolVar( &co,      "c", false, "list color codes with examples" )
-    flag.Parse()    // process flags
+    flag.StringVar( &dest,  "ip", "127.0.0.1:1300", "ip:port of server" )
+    flag.IntVar( &tsize,    "s", 256, "transmission size ( bytes )" )
+    flag.BoolVar( &v,       "v",  false, "display version and exit" )
+    flag.BoolVar( &vv,      "vv", false, "display version and about info and exit" )
+    flag.Parse()
+
+    // FIXME get better versioning method
+    VERS = "4.0.0"
+
+    if vv {         // display info and exit
+        fmt.Println( "ekho client v" + VERS )
+        fmt.Println( "ekho is named after Echo the Oread" )
+        fmt.Println( "in Greek mythology, Echo was cursed by Hera to only be able to say the last words spoken to her" )
+        fmt.Println( "i found this to be quite fitting for a MOTD server" )
+        return
+    } else if v {   // display info and exit
+        fmt.Println( VERS )
+        return
+    }
+
+    if co {         // display color codes and examples and quit
+        // print color code and color example on same line
+        // color.XYZ print inserts newline
+        fmt.Print( "$1: " )
+        color.Red( "red" )
+        fmt.Print( "$2: " )
+        color.Yellow( "yellow" )
+        fmt.Print( "$3: " )
+        color.Green( "green" )
+        fmt.Print( "$4: " )
+        color.Blue( "blue" )
+        fmt.Print( "$5: " )
+        color.Cyan( "cyan" )
+        fmt.Print( "$6: " )
+        color.Magenta( "magenta" )
+        fmt.Print( "$7: " )
+        color.Black( "black" )
+        fmt.Print( "$0: " )
+        color.White( "white (reset)" )
+        // print bold codes
+        fmt.Print( "\n#1: " )
+        // create bold color object, change out actual color and print
+        bold := color.New( color.Bold, color.FgRed )
+        bold.Println( "bold red" )
+        fmt.Print( "#2: " )
+        bold.Add( color.FgYellow )
+        bold.Println( "bold yellow" )
+        fmt.Print( "#3: " )
+        bold.Add( color.FgGreen )
+        bold.Println( "bold green" )
+        fmt.Print( "#4: " )
+        bold.Add( color.FgBlue )
+        bold.Println( "bold blue" )
+        fmt.Print( "#5: " )
+        bold.Add( color.FgCyan )
+        bold.Println( "bold Cyan" )
+        fmt.Print( "#6: " )
+        bold.Add( color.FgMagenta )
+        bold.Println( "bold magenta" )
+        fmt.Print( "#7: " )
+        bold.Add( color.FgBlack )
+        bold.Println( "bold black" )
+        fmt.Print( "#0: " )
+        bold.Add( color.FgWhite )
+        bold.Println( "bold white" )
+        return      // bail
+    }
 
     service := dest     // declare server ip:port
 
@@ -375,6 +683,27 @@ func main() {
                 fmt.Println( "/a/ flag must be used with an arugment" )
                 os.Exit( 1 )
             }
+        case edit:      // if edit flag is active
+            // if arguments were specified
+            if len( flag.Args() ) > 0 {
+                // argument is supposed to the number of the quote to
+                // be edited, get first arg
+                // cast to int just to make sure it's a valid number
+                // assuming the user knows what they're doing
+                _, rerr := strconv.Atoi( flag.Args()[0] )
+                // if there was an error, just pretend there's no args
+                if rerr != nil {
+                    command = "e1@init"     // remove request 1
+                } else {
+                    // if user knows the number, take care of it
+                    // arg[0] is a string, so concat is cool
+                    // jump right into edit request 2
+                    command = "e2@" + flag.Args()[0]
+                }
+            } else {    // if no argument was specified for edit
+                // jump right into edit request 1
+                command = "e1@init"
+            }
         case remove:    // if remove flag is active
             // if arguments were specified
             if len( flag.Args() ) > 0 {
@@ -386,7 +715,6 @@ func main() {
                 // if there was an error, just pretend there's no args
                 if rerr != nil {
                     command = "r1@init"     // remove request 1
-                    // TODO come up w/ useful argument, replace dumvar
                 } else {
                     // if user knows the number, take care of it
                     // arg[0] is a string, so concat is cool

go.mod

@@ -0,0 +1,11 @@
+module earth-1.net/oracle/ekho
+
+go 1.27.1
+
+require github.com/fatih/color v1.19.0
+
+require (
+	github.com/mattn/go-colorable v0.1.14 // indirect
+	github.com/mattn/go-isatty v0.0.20 // indirect
+	golang.org/x/sys v0.42.0 // indirect
+)

go.sum

@@ -0,0 +1,9 @@
+github.com/fatih/color v1.19.0 h1:Zp3PiM21/9Ld6FzSKyL5c/BULoe/ONr9KlbYVOfG8+w=
+github.com/fatih/color v1.19.0/go.mod h1:zNk67I0ZUT1bEGsSGyCZYZNrHuTkJJB+r6Q9VuMi0LE=
+github.com/mattn/go-colorable v0.1.14 h1:9A9LHSqF/7dyVVX6g0U9cwm9pG3kP9gSzcuIPHPsaIE=
+github.com/mattn/go-colorable v0.1.14/go.mod h1:6LmQG8QLFO4G5z1gPvYEzlUgJ2wF+stgPZH1UqBm1s8=
+github.com/mattn/go-isatty v0.0.20 h1:xfD0iDuEKnDkl03q4limB+vH+GxLEtL/jb4xVJSWWEY=
+github.com/mattn/go-isatty v0.0.20/go.mod h1:W+V8PltTTMOvKvAeJH7IuucS94S2C6jfK/D7dTCTo3Y=
+golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
+golang.org/x/sys v0.42.0 h1:omrd2nAlyT5ESRdCLYdm3+fMfNFE/+Rf4bDIQImRJeo=
+golang.org/x/sys v0.42.0/go.mod h1:4GL1E5IUh+htKOUEOaiffhrAeqysfVGipDYzABqnCmw=

justfile

@@ -53,7 +53,6 @@ ins_server:
     echo "systemctl status ekho"
     systemctl status ekho
 
-
 # install client
 ins_client:
     #!/usr/bin/bash
@@ -67,3 +66,57 @@ ins_client:
     mv ekho /usr/local/bin/
     echo "add 'ekho' to shell config (config.fish, .bashrc, etc)"
 
+# test server
+stest:
+    @echo "creating server test session"
+    @tmux new-session -Ad -s "server test"
+    @tmux split-window -h -t "server test:1" -l 10%
+    @tmux split-window -v -t "server test:1.2"
+    @tmux send-keys -t "server test:1.1" "clear" Enter
+    @tmux send-keys -t "server test:1.2" "clear" Enter
+    @tmux send-keys -t "server test:1.3" "clear" Enter
+    @tmux rename-window "server test"
+    @tmux send-keys -t "server test:1.1" "vim server.go" Enter
+    @tmux send-keys -t "server test:1.2" "./server"
+    @tmux send-keys -t "server test:1.3" "./client"
+    @tmux attach -t "server test"
+
+# test client
+ctest:
+    @echo "creating client test session"
+    @tmux new-session -Ad -s "client test"
+    @tmux split-window -h -t "client test:1" -l 10%
+    @tmux split-window -v -t "client test:1.2"
+    @tmux send-keys -t "client test:1.1" "clear" Enter
+    @tmux send-keys -t "client test:1.2" "clear" Enter
+    @tmux send-keys -t "client test:1.3" "clear" Enter
+    @tmux rename-window "client test"
+    @tmux send-keys -t "client test:1.1" "vim client.go" Enter
+    @tmux send-keys -t "client test:1.2" "./server" Enter
+    @tmux send-keys -t "client test:1.3" "./client"
+    @tmux attach -t "client test"
+
+# dev work
+dev:
+    #!/usr/bin/bash
+    REPO=$(basename $(git rev-parse --show-toplevel))
+    BRANCH=$(git branch --show-current)
+    tmux has-session -t "$REPO->$BRANCH"
+    if [[ $? -eq 0 ]]; then
+        tmux attach-session -t "$REPO->$BRANCH"
+    else
+        tmux new-session -Ad -s "$REPO->$BRANCH"
+        tmux rename-window "write"
+        tmux new-window -a -t 1 -n "test"
+        tmux new-window -a -t 2 -n "git" lazygit
+        tmux new-window -a -t 3 -n "man"
+        tmux select-window -t 2
+        tmux select-window -t 1
+        tmux attach -t "$REPO->$BRANCH"
+    fi
+
+# prep repo to be committed
+prep:
+    mv justfile test_justfile
+    mv prod_justfile justfile
+

list.q

@@ -1,9 +1 @@
-@user:
+thank you for using $1ekho
-shmuley
-floglin
-@all:
-blingo
-no but like actually blingo shmingo
-i would prefer not to
-@default:
-thank you for using ekho

server.go

@@ -1,15 +1,13 @@
 // =============================================================================
 // Auth: alex
 // File: server.go
-// Revn: 05-12-2026  2.1.2
+// Revn: 09-15-2026  3.0.2
 // Func: host MOTD connection
 //
-// TODO: 
+// TODO: add user-specific prints
-//       add user-specific prints
 //       write usage and errors to logfile
 //       remove ioutil import
 //       send logfile to client on request
-//       add color printing to qfile
 //       add flags?
 //       add more /codes/ to handle
 // =============================================================================
@@ -51,6 +49,11 @@
 //              line bug in /la/ AGAIN
 // 05-11-2026: updated fread() to handle users in qfile
 // 05-12-2026: added v and vv input flags
+// 09-05-2026: buncha shit happened, dropped the commit
+//#09-06-2026: added /e1/, /e2/, and /cr/, got edit working
+// 09-12-2026: minor comments in receive()
+//*09-15-2026: fixed OOB error in /qa/ for perhaps the last time
+//             fixed bad Atoi conversion bug for perhaps the last time
 //
 // =============================================================================
 
@@ -121,14 +124,9 @@ func fread() string {
     // bugs where a blank item was introduced into qlist and calling
     // /la/ would produce a blank line on the client side that didn't
     // really exist
-    qfile = qfile[:len( qfile ) - 1]
+    qfile = qfile[:len( qfile )]
     // cast bytes to string, split string over newline into array
-    //qlist = strings.Split( string( qfile ), "\n" )
+    qlist = strings.Split( string( qfile ), "\n" )
-    profiles := strings.Split( string( qfile ), "@" )
-    for _, p := range profiles {
-        quotes := strings.Split( p, ":" )
-        qlist[quotes[0]] = strings.Split( quotes[1], "\n" )
-    }
 
     return string( qfile )      // return file as string
 }
@@ -145,9 +143,9 @@ func writeFile( f string ) {
 }
 
 
-// handle connections ( new and improved )
+// receive from connection, send to get processed, send out response
-func handle( conn net.Conn ) {
+func receive( conn net.Conn ) {
-
+    
     // create buffer to hold read message
     buffer := make( []byte, tsize )
     //var buffer [256]byte
@@ -155,20 +153,29 @@ func handle( conn net.Conn ) {
     n, err := conn.Read( buffer[:] )
     checkN( err, conn ) // make sure read worked
 
-    // message anatomy
-    // command@number[@user]
-    //        @       @             delimiter
-    // command                      command, like list request or quote request
-    //         number               sequence or quote number
-    //                 user         quote username if applicable, default if not give
-    // add request message anatomy
-    // command@quote[@user]
-    //         quote                quote to be added
-    //                user          quote username, default if not given
-
     // cast message to string, take first n bytes, split over @
     command := strings.Split( string( buffer[:n] ), "@" )
 
+    // if command is to end transaction
+    if command[0] == "te" {
+        conn.Close()    // end transaction
+        return          // and bail
+    }
+
+    // process command get response
+    resp := handle( command )
+
+    // write response to client
+    _, err = conn.Write( []byte( resp ) )
+    checkN( err, conn ) // make sure write worked
+
+    receive( conn )  // call handle() again to get response from client
+}
+
+
+// handle connections ( new and improved )
+func handle( command []string ) string {
+
     // declare response string
     var resp string
     switch command[0] {     // switch/case over opcode
@@ -179,20 +186,9 @@ func handle( conn net.Conn ) {
             // concat and send
             resp = "sa@" + num      // size answer
         case "qr":      // /qr/, quote request
-            // see if user was sent
-            subcommands := strings.Split( command[1], ":" )
-
-            // keep track of name, or default if need be
-            var name string
-            if len( subcommands ) == 1 {
-                name = "default"
-            } else {
-                name = subcommands[1]
-            }
-
             // convert message argument to string to make sure it's a
             // valid number
-            num, nerr := strconv.Atoi( subcommands[0] )
+            num, nerr := strconv.Atoi( command[1] )
             // nerr will not be nil if comm[1] is not a number
             if nerr != nil {
                 // formulate an error message
@@ -200,7 +196,7 @@ func handle( conn net.Conn ) {
                 resp = "ba@qr@!"    // bad answer
             } else {        // comm[1] was a number, but...
                 switch {    // how do we know it's a valid number
-                    case num > len( qlist[name] ):
+                    case num > len( qlist ):
                         // bad answer in quote request
                         resp = "ba@qr@>"
                         // why bad? num is >
@@ -210,7 +206,7 @@ func handle( conn net.Conn ) {
                         // why bad? num is -
                     default:
                         // good num, get quote, send off
-                        resp = "qa@" + qlist[name][num]   // quote answer
+                        resp = "qa@" + qlist[num]   // quote answer
                 }
             }
         case "lr":      // /lr/, list request
@@ -252,11 +248,83 @@ func handle( conn net.Conn ) {
             }
         case "ar":      // /ar/, add request
             // append new quote to list
-            qlist["f"] = append( qlist["f"], command[1] )
+            qlist = append( qlist, command[1] )
             // also append new quote to file variable
             qfile = qfile + "\n" + command[1]
             writeFile( qfile )
             resp = "aa@success"     // add answer
+        case "cr":
+            if len( command ) != 5 {
+                return "ba@bad request"
+            }
+
+            //mes1 := strings.Join( command[1:3], "@" )
+            //mes1 := strings.Join( command[3:], "@" )
+            _ = handle( command[1:3] )
+            _ = handle( command[3:] )
+
+            resp = "e2@success"
+        case "e1":
+            resp = "e1@"    // begin crafting response
+            // file too big for single transmission
+            // initial header size is 5, e1@1@, so counting that into
+            // the transmission size, the file must be longer than 251
+            // ( default ) bytes to reach this block of code
+            if len( qfile ) > ( tsize - 5 ) {
+                if command[1] == "init" {   // first request
+                    // add message number, delim, and the first
+                    // transmittable bytes
+                    resp = resp + "0@" + qfile[:( tsize - 5 )]
+                } else {    // subsequent requests
+                    // convert byte count to int
+                    bytes, err := strconv.Atoi( command[1] )
+                    check( err )    // make sure convert worked
+                    // replace tx'd bytes and delim to new header
+                    resp = resp + command[1] + "@"
+                    rlen := len( resp )     // capture header length
+                    // slices are always of size "txsize - header
+                    // length", so find end byte
+                    end := bytes + ( tsize - rlen )
+                    // if end goes beyond the bounds of the list
+                    if end > len( qfile ) {
+                        // replace byte count  with X to signal
+                        // final message, concat the rest of the file,
+                        // beginning with the start index
+                        resp = "e1@X@" + qfile[bytes:]
+                    } else {
+                        // get slice from start index to end, concat
+                        // with response
+                        resp = resp + qfile[bytes:end]
+                    }
+                }
+            } else {    // file is smaller than the tx size
+                // just concat entire list to send
+                resp = resp + qfile    // list answer
+            }
+        case "e2":
+            // convert message argument to string to make sure it's a
+            // valid number
+            num, nerr := strconv.Atoi( command[1] )
+            // nerr will not be nil if comm[1] is not a number
+            if nerr != nil {
+                // formulate an error message
+                // TODO flesh this out more
+                resp = "ba@qr@!"    // bad answer
+            } else {        // comm[1] was a number, but...
+                switch {    // how do we know it's a valid number
+                    case num > len( qlist ):
+                        // bad answer in quote request
+                        resp = "ba@qr@>"
+                        // why bad? num is >
+                    case num < 0:
+                        // bad answer in quote request
+                        resp = "ba@qr@-"
+                        // why bad? num is -
+                    default:
+                        // good num, get quote, send off
+                        resp = "e2@" + command[1] + "@" + qlist[num - 1]
+                }
+            }
         case "r1":      // /r1/, remove request 1
             resp = "r1@"    // begin crafting response
             // file too big for single transmission
@@ -319,14 +387,14 @@ func handle( conn net.Conn ) {
                     default:
                         // replace the quote at that position with
                         // final quote
-                        qlist["f"][num] = qlist["f"][len( qlist ) - 1]
+                        qlist[num] = qlist[len( qlist ) - 1]
                         // remove second copy of quote
-                        qlist["f"] = qlist["f"][:len( qlist ) - 1]
+                        qlist = qlist[:len( qlist ) - 1]
                         // O(1) remove from list at any position
                         // must entirely recreate quote string
                         var f string = ""   // init empty string
                         // iterate over list, disregard index
-                        for _, v := range qlist["f"] {
+                        for _, v := range qlist {
                             // add next quote to file and separate
                             // quotes with newline
                             f = f + v + "\n"
@@ -349,25 +417,20 @@ func handle( conn net.Conn ) {
         case "te":      // /te/, transaction end
             // TODO should I be sending something?
             // TODO is it better to close now or outside of handle()
-            conn.Close()    // close connection and leave
+            //conn.Close()    // close connection and leave
-            return          // return from handle(), finish connection
+            return ""       // return from handle(), finish connection
         default:        // opcode not recognized
             // TODO there should be more being down, here, right?
-            return          // return from handle(), finish connection
+            return ""       // return from handle(), finish connection
     }
 
-    // write response to client
+    return resp
-    _, err = conn.Write( []byte( resp ) )
-    checkN( err, conn ) // make sure write worked
-
-    handle( conn )  // call handle() again to get response from client
 
 }
 
 
 // globals
-//var qlist []string      // list of quotes
+var qlist []string      // list of quotes
-var qlist = make( map[string][]string )
 var qfile string        // file object
 var tsize int           // size of transmission buffer
 var VERS string         // version
@@ -391,7 +454,7 @@ func main() {
     flag.Parse()
 
     // FIXME get better versioning method
-    VERS = "2.1.2"
+    VERS = "3.0.2"
 
     if vv {         // display info and exit
         fmt.Println( "ekho server v" + VERS )
@@ -427,7 +490,7 @@ func main() {
         // wait, create connection when found
         conn, err := listener.Accept()
         check( err )    // make sure connection works
-        go handle( conn )  // handle connection
+        go receive( conn )  // handle connection
     }
 }