refactor(cli): write_usage and write_command_help now use text/table.

TODOS.md

@@ -6,7 +6,7 @@
 
 3. Add color flag and support non colored output.
 
-4. Use text/tables for command output
+4. Rewrite `write_command_help` to use text/tables
 
 5. Generate md and man pages again.
 

cli.odin

@@ -5,6 +5,7 @@ import "core:fmt"
 import "core:io"
 import "core:os"
 import "core:strings"
+import "core:text/table"
 
 Command :: struct {
 	name:        string,
@@ -253,56 +254,47 @@ at before, restore your backup with:
 
   %senvr%s [command]
 
-%sAvailable Commands:%s
 `,
 		COLOR_HEADINGS,
 		ANSI_RESET,
 		COLOR_FLAGS,
 		ANSI_RESET,
-		COLOR_HEADINGS,
-		ANSI_RESET,
 		flush = false,
 	)
 
+	tbl: table.Table
+	table.init(&tbl, context.temp_allocator, context.temp_allocator)
+	table.padding(&tbl, 2, 0)
+
+	table.caption(&tbl, "Available Commands:")
+
 	for c in COMMANDS {
-		name_start := len(c.name)
-		fmt.wprintf(w, "  %s%s", COLOR_COMMANDS, c.name, flush = false)
+		name := c.name
+		// TODO: Can we do better?
 		for a in c.aliases {
-			fmt.wprintf(w, ", %s", a, flush = false)
-			name_start += len(a) + 2
+			name = strings.join([]string{name, a}, ", ", tbl.format_allocator)
 		}
-		fmt.wprint(w, ANSI_RESET)
-		padding := 20 - name_start
-		if padding > 0 {
-			for _ in 0 ..< padding {
-				io.write_byte(w, ' ')
-			}
-		}
-		fmt.wprintf(w, " %s\n", c.short, flush = false)
+		table.row(&tbl, table.format(&tbl, "%s%s%s", COLOR_COMMANDS, name, ANSI_RESET), c.short)
 	}
 
+	write_borderless_table(w, &tbl)
+	table_reset(&tbl)
+
+	table.caption(&tbl, "Flags:")
+
+	table.row(&tbl, COLOR_FLAGS + "-h, --help" + ANSI_RESET, `show this documentation`)
+	table.row(
+		&tbl,
+		COLOR_FLAGS + "-c, --config-file" + ANSI_RESET + " <path>",
+		`config file (default "~/.envr/config.json")`,
+	)
+	write_borderless_table(w, &tbl)
+
 	fmt.wprintf(
 		w,
-		"\n" +
-		COLOR_HEADINGS +
-		"Flags:" +
-		ANSI_RESET +
-		"\n\n  " +
-		COLOR_FLAGS +
-		"-h, --help" +
-		ANSI_RESET +
-		"   help for envr\n" +
-		COLOR_FLAGS +
-		`  -c, --config-file` +
-		ANSI_RESET +
-		` <path>   config file (default "~/.envr/config.json")
-
-Use "` +
-		COLOR_FLAGS +
-		"envr" +
-		ANSI_RESET +
-		` [command] --help" for more information about a command.
-`,
+		`Use "%senvr%s [command] --help" for more information about a command.`,
+		COLOR_FLAGS,
+		ANSI_RESET,
 		flush = false,
 	)
 }

table.odin

@@ -1,5 +1,7 @@
 package main
 
+import "core:fmt"
+import "core:io"
 import "core:text/table"
 import "core:unicode/utf8"
 
@@ -34,3 +36,44 @@ ansi_aware_width :: proc(str: string) -> int {
 	return width
 }
 
+write_borderless_table :: proc(w: io.Writer, t: ^table.Table) {
+	table.build(t, ansi_aware_width)
+
+	write_table_separator :: proc(w: io.Writer, tbl: ^table.Table) {
+		io.write_byte(w, '\n')
+	}
+
+	if t.caption != "" {
+		table.write_text_align(
+			w,
+			fmt.tprintf("%s%s%s", COLOR_HEADINGS, t.caption, ANSI_RESET),
+			.Left,
+			0, //t.lpad,
+			0, //t.rpad,
+			t.tblw + t.nr_cols - 1 - ansi_aware_width(t.caption) - t.lpad - t.rpad,
+		)
+		io.write_byte(w, '\n')
+	}
+
+	write_table_separator(w, t)
+	for row in 0 ..< t.nr_rows {
+		for col in 0 ..< t.nr_cols {
+			table.write_table_cell(w, t, row, col)
+		}
+		io.write_byte(w, '\n')
+		if t.has_header_row && row == table.header_row(t) {
+			write_table_separator(w, t)
+		}
+	}
+	write_table_separator(w, t)
+}
+
+table_reset :: proc(t: ^table.Table) {
+	clear(&t.cells)
+	clear(&t.colw)
+	t.caption = ""
+	t.tblw = 0
+	t.nr_cols = 0
+	t.nr_rows = 0
+}
+