Added Markdown definitions for bold and italic with asterisks

Reviewed-on: #1

color.go

@@ -38,13 +38,13 @@ var possibleColors map[string]color = map[string]color{
 	"GREEN":   {"GREEN", colorData.New(colorData.FgGreen)},
 	"YELLOW":  {"YELLOW", colorData.New(colorData.FgYellow)},
 	"BLUE":    {"BLUE", colorData.New(colorData.FgBlue)},
-	"MAGENTA": {"MAGENTA", colorData.New(38, 2, 254, 141, 255)},
+	"MAGENTA": {"MAGENTA", colorData.New(colorData.FgMagenta)},
 	"CYAN":    {"CYAN", colorData.New(colorData.FgCyan)},
 	"WHITE":   {"WHITE", colorData.New(colorData.FgWhite)},
 	"GRAY":    {"GRAY", colorData.New(colorData.FgWhite, colorData.Faint)},
 	// Last three numbers are RGB. Reference https://en.wikipedia.org/wiki/ANSI_escape_code for what the first two numbers mean.
-	"ORANGE":   {"ORANGE", colorData.New(38, 2, 255, 153, 28)},
-	"DARKBLUE": {"DARKBLUE", colorData.New(38, 2, 0, 112, 255)},
+	//	"ORANGE":   {"ORANGE", colorData.New(38, 2, 255, 153, 28)},
+	//	"DARKBLUE": {"DARKBLUE", colorData.New(38, 2, 0, 112, 255)},
 	"NONE": {"NONE", colorData.New()},
 }
 
@@ -157,7 +157,7 @@ func stringToRGB(rgbString string) (*RGB, error) {
 func loadColorsFromFile(filepath string) error {
 	data, err := os.ReadFile(filepath)
 	if err != nil {
-		panic(err)
+		return err
 	}
 	// Read color config file into a MapSlice
 	tempMapSlice := yaml.MapSlice{}

config.go

@@ -3,14 +3,15 @@ package main
 import (
 	"embed"
 	"errors"
+	"fmt"
 	"io/fs"
 	"os"
 	"path/filepath"
-	"regexp"
 	"runtime"
 	"strings"
 
 	"gitea.twomorecents.org/Rockingcool/ccat/stack"
+	"gitea.twomorecents.org/Rockingcool/kleingrep/regex"
 
 	"gopkg.in/yaml.v2"
 )
@@ -88,13 +89,16 @@ func loadConfig(configFilename string) (stack.Stack[regColor], error) {
 	//  returned.
 	regColorStack := stack.NewStack[regColor](len(strings.Split(string(configFile), "\n"))) // The stack will have the same size as the number of lines in the file
 	for _, item := range tempMapSlice {
-		re := regexp.MustCompile(item.Key.(string))
+		re, err := regex.Compile(item.Key.(string), regex.RE_MULTILINE, regex.RE_SINGLE_LINE)
+		if err != nil {
+			return *stack.NewStack[regColor](0), fmt.Errorf("%v: '%s'", err, item.Key.(string))
+		}
 		clr, err := newColor(item.Value.(string))
 		if err != nil {
 			return *stack.NewStack[regColor](0), err
 		}
 		// If we got past the errors, then the color _must_ be valid.
-		regColorStack.Push(regColor{re, clr})
+		regColorStack.Push(regColor{&re, clr})
 	}
 
 	return *regColorStack, nil

config/c.conf

@@ -14,7 +14,11 @@
 '\<(.*?)\>': BLUE
 # Assignments and comparisons
 # TODO: Add less than, greater than, not equal to, and struct pointer member access
-'(?:\s|\b)(=|==|!=|<=|>=|\->)(\s|\b)' : CYAN
+'(?:\s|\b)(=|==|!=|\<=|\>=|\->)(\s|\b)' : CYAN
+
+# Built-in boolean values, modifiers
+'\b(static|const|true|false)\b': DARKBLUE
+
 # Keywords
 '\b(if|else|while|do|for|return)\b': CYAN
 '(\n|^)(#ifdef|#ifndef|#define|#include)\b': CYAN

config/ccat.colors

@@ -5,3 +5,4 @@
 PINK: 38 244 211 244 22
 BOLD_WHITE: 38 -1 -1 -1 1
 ITALIC_WHITE: 38 -1 -1 -1 3
+UNDERLINE_WHITE: 38 -1 -1 -1 4

config/go.conf

@@ -1,7 +1,7 @@
 # Priority decreases going downward ie. If two regexes match the same piece of
 # text, the one defined earlier will take precedence over the one defined later.
 # Comments
-'//.*': GRAY
+'//[^\n]*': GRAY
 '/\*[^*]*\*+(?:[^/*][^*]*\*+)*/': GRAY
 # Numbers and special values
 '\b\-?[0-9]*\b': MAGENTA
@@ -14,15 +14,13 @@
 "'(.)'": BLUE
 "'\\\\(.)'": BLUE # The escape backslash needs to be escaped as well
 # Assignments and comparisons
-'(?:\s|\b)(=|==|!=|<=|>=)(\s|\b)' : CYAN
+'(?:\s|\b)(=|==|!=|\<=|\>=)(\s|\b)' : CYAN
 '(&&)|(\|\|)': CYAN
 # Keywords
 '\b(if|else|for|range|go|func|return|break|continue)\b': CYAN
-'\b(import|var|const|type|struct)\b': CYAN
+'\b(package|import|var|const|type|struct)\b': CYAN
 # Built-in Functions
-'\b(panic|len)\b': DARKBLUE
-# Functions from packages (package name and function name separated by dot)
-'\b(\w*\.\w*)\b': DARKBLUE
+'\b(panic|len)\b': GREEN
 # Data Types
 '\b(bool|byte|rune|string|interface|map|chan)\b': YELLOW
 '\b(u?int)(8|16|32|64)?\b': YELLOW

config/md.conf

@@ -1,13 +1,21 @@
 # Priority decreases going downward ie. If two regexes match the same piece of
 # text, the one defined earlier will take precedence over the one defined later.
 # Headings
-'##?#?#?#?#?.*': MAGENTA
+'^#{1,6}.*?$': MAGENTA
+
+# Link text
+'\[.*?\](?=\(.*?\))': UNDERLINE_WHITE
+
+# Link URL
+'https?://\w+\.\w+.*?(?=\))': RED
 
 # Code blocks
 '```(.|\n)+?```': YELLOW
 
 # Bold text
 '\b__[^_]+?__\b': BOLD_WHITE
+'\*\*[^*]+?\*\*': BOLD_WHITE
 
 # Italic text
 '\b_[^_]+?_\b': ITALIC_WHITE
+'\*[^*\n]+?\*': ITALIC_WHITE

go.mod

@@ -1,11 +1,14 @@
 module gitea.twomorecents.org/Rockingcool/ccat
 
-go 1.22.5
+go 1.23.1
+
+toolchain go1.24.2
 
 require (
-	github.com/fatih/color v1.17.0 // indirect
+	gitea.twomorecents.org/Rockingcool/kleingrep v0.7.0 // indirect
+	github.com/fatih/color v1.18.0 // indirect
 	github.com/mattn/go-colorable v0.1.13 // indirect
 	github.com/mattn/go-isatty v0.0.20 // indirect
-	golang.org/x/sys v0.18.0 // indirect
+	golang.org/x/sys v0.25.0 // indirect
 	gopkg.in/yaml.v2 v2.4.0 // indirect
 )

go.sum

@@ -1,7 +1,13 @@
+gitea.twomorecents.org/Rockingcool/kleingrep v0.6.1 h1:eeryIhh2lDMXsu3D1i95IgW2SPte1DaJxlfmiQjrpsE=
+gitea.twomorecents.org/Rockingcool/kleingrep v0.6.1/go.mod h1:8bcYe2hyjNIDM9J2xnyH5veMCAMzVJQR3c0OkatcEPg=
+gitea.twomorecents.org/Rockingcool/kleingrep v0.7.0 h1:owDJjgulFmg9DmgKBtwZMxdf19wM9VbGchMXq7ZlhIM=
+gitea.twomorecents.org/Rockingcool/kleingrep v0.7.0/go.mod h1:8bcYe2hyjNIDM9J2xnyH5veMCAMzVJQR3c0OkatcEPg=
 github.com/BurntSushi/toml v1.4.0 h1:kuoIxZQy2WRRk1pttg9asf+WVv6tWQuBNVmK8+nqPr0=
 github.com/BurntSushi/toml v1.4.0/go.mod h1:ukJfTF/6rtPPRCnwkur4qwRxa8vTRFBF0uk2lLoLwho=
 github.com/fatih/color v1.17.0 h1:GlRw1BRJxkpqUCBKzKOw098ed57fEsKeNjpTe3cSjK4=
 github.com/fatih/color v1.17.0/go.mod h1:YZ7TlrGPkiz6ku9fK3TLD/pl3CpsiFyu8N92HLgmosI=
+github.com/fatih/color v1.18.0 h1:S8gINlzdQ840/4pfAwic/ZE0djQEH3wM94VfqLTZcOM=
+github.com/fatih/color v1.18.0/go.mod h1:4FelSpRwEGDpQ12mAdzqdOukCy4u8WUtOY6lkT/6HfU=
 github.com/go-yaml/yaml v2.1.0+incompatible h1:RYi2hDdss1u4YE7GwixGzWwVo47T8UQwnTLB6vQiq+o=
 github.com/go-yaml/yaml v2.1.0+incompatible/go.mod h1:w2MrLa16VYP0jy6N7M5kHaCkaLENm+P+Tv+MfurjSw0=
 github.com/mattn/go-colorable v0.1.13 h1:fFA4WZxdEF4tXPZVKMLwD8oUnCTTo08duU7wxecdEvA=
@@ -13,6 +19,8 @@ golang.org/x/sys v0.0.0-20220811171246-fbc7d0a398ab/go.mod h1:oPkhp1MJrh7nUepCBc
 golang.org/x/sys v0.6.0/go.mod h1:oPkhp1MJrh7nUepCBck5+mAzfO9JrbApNNgaTdGDITg=
 golang.org/x/sys v0.18.0 h1:DBdB3niSjOA/O0blCZBqDefyWNYveAYMNF1Wum0DYQ4=
 golang.org/x/sys v0.18.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
+golang.org/x/sys v0.25.0 h1:r+8e+loiHxRqhXVl6ML1nO3l1+oFoWbnlu2Ehimmi34=
+golang.org/x/sys v0.25.0/go.mod h1:/VUhepiaJMQUp4+oa/7Zr1D23ma6VTLIYjOOTFZPUcA=
 gopkg.in/check.v1 v0.0.0-20161208181325-20d25e280405/go.mod h1:Co6ibVJAznAaIkqp8huTwlJQCZ016jof/cbN4VW5Yz0=
 gopkg.in/yaml.v2 v2.4.0 h1:D8xgwECY7CYvx+Y2n4sBz93Jn9JRvxdiyyo8CTfuKaY=
 gopkg.in/yaml.v2 v2.4.0/go.mod h1:RDklbk79AGWmwhnvt/jBztapEOGDOx6ZbXqjP6csGnQ=

main.go

@@ -79,7 +79,7 @@ func main() {
 	// Check if config exists. If it doesn't, generate the config files.
 	userHomeDir, err := os.UserHomeDir() // Get current user's home directory, to construct config path
 	if err != nil {
-		panic(err)
+		printErrAndExit("Unable to retrieve user home directory")
 	}
 	configPath := filepath.Join(userHomeDir + "/.config/ccat/")
 	if _, err := os.Stat(configPath); os.IsNotExist(err) {
@@ -107,7 +107,7 @@ func main() {
 	// the program.
 	finfo, err := os.Stat(fileName)
 	if err != nil {
-		panic(err)
+		printErrAndExit("Unable to read file")
 	}
 	if finfo.Size() == 0 {
 		os.Exit(0)
@@ -157,13 +157,13 @@ func main() {
 		clr := regclr.clr
 		// Returns an int double-slice, where each slice contains the start and end indices
 		// of the match. In this case, I am finding all the matches of 're' in 'data'.
-		matches := re.FindAllSubmatchIndex(data, -1)
+		matches := re.FindAllSubmatch(string(data))
 		if matches == nil {
 			continue
 		}
 		// For each match, apply the corresponding color to all characters in the match.
 		for _, match := range matches {
-			units = applyColor(units, match[0], match[1], clr)
+			units = applyColor(units, match[0].StartIdx, match[0].EndIdx, clr)
 		}
 	}
 

regcolor.go

@@ -1,10 +1,10 @@
 package main
 
-import "regexp"
+import "gitea.twomorecents.org/Rockingcool/kleingrep/regex"
 
 // A regColor is a regex-color pair. The config file is read
 // into a stack of this data type.
 type regColor struct {
-	re  *regexp.Regexp
+	re  *regex.Reg
 	clr color
 }