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

@@ -3,6 +3,7 @@ package main
 import (
 	"embed"
 	"errors"
+	"fmt"
 	"io/fs"
 	"os"
 	"path/filepath"
@@ -88,7 +89,10 @@ 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 := regex.MustCompile(item.Key.(string), regex.RE_MULTILINE, regex.RE_SINGLE_LINE)
+		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

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

@@ -18,11 +18,9 @@
 '(&&)|(\|\|)': 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

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)