123 lines
2.9 KiB
V
123 lines
2.9 KiB
V
module main
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import os
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import flag
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import strings
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const (
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tool_version = '0.0.4'
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tool_description = 'Converts a list of arbitrary files into a single v module file.'
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)
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struct Context {
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mut:
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files []string
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prefix string
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show_help bool
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module_name string
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write_file string
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}
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fn (context Context) header() string {
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mut header_s := ''
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header_s += 'module ${context.module_name}\n'
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header_s += '\n'
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allfiles := context.files.join(' ')
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mut options := []string{}
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if context.prefix.len > 0 {
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options << '-p ${context.prefix}'
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}
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if context.module_name.len > 0 {
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options << '-m ${context.module_name}'
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}
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if context.write_file.len > 0 {
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options << '-w ${context.write_file}'
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}
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soptions := options.join(' ')
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header_s += '// File generated by:\n'
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header_s += '// v bin2v ${allfiles} ${soptions}\n'
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header_s += '// Please, do not edit this file.\n'
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header_s += '// Your changes may be overwritten.\n'
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header_s += '\n'
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header_s += 'const (\n'
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return header_s
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}
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fn (context Context) footer() string {
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return ')\n'
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}
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fn (context Context) file2v(file string) string {
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mut sb := strings.new_builder(1000)
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fname := os.file_name(file)
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fname_no_dots := fname.replace('.', '_')
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byte_name := '${context.prefix}${fname_no_dots}'.to_lower()
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fbytes := os.read_bytes(file) or {
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eprintln('Error: $err')
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return ''
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}
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fbyte := fbytes[0]
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sb.write(' ${byte_name}_len = ${fbytes.len}\n')
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sb.write(' ${byte_name} = [ byte(${fbyte}), \n ')
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for i := 1; i < fbytes.len; i++ {
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b := int(fbytes[i]).str()
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sb.write('${b:4s}, ')
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if 0 == i % 16 {
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sb.write('\n ')
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}
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}
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sb.write('\n]!!\n')
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sb.write('\n')
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return sb.str()
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}
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fn main() {
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mut context := Context{}
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mut fp := flag.new_flag_parser(os.args[1..])
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fp.application('v bin2v')
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fp.version(tool_version)
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fp.description(tool_description)
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fp.arguments_description('FILE [FILE]...')
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context.show_help = fp.bool('help', `h`, false, 'Show this help screen.')
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context.module_name = fp.string('module', `m`, 'binary', 'Name of the generated module.')
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context.prefix = fp.string('prefix', `p`, '', 'A prefix put before each resource name.')
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context.write_file = fp.string('write', `w`, '', 'Write directly to a file with the given name.')
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if context.show_help {
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println(fp.usage())
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exit(0)
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}
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files := fp.finalize() or {
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eprintln('Error: ' + err)
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exit(1)
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}
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real_files := files.filter(it != 'bin2v')
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if real_files.len == 0 {
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println(fp.usage())
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exit(0)
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}
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context.files = real_files
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if !context.write_file.ends_with('.v') {
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context.write_file += '.v'
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}
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if context.write_file.len > 0 {
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mut out_file := os.create(context.write_file) or { panic(err) }
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out_file.write(context.header())
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for file in real_files {
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out_file.write(context.file2v(file))
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}
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out_file.write(context.footer())
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}
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else {
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println(context.header())
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for file in real_files {
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println(context.file2v(file))
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}
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println(context.footer())
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}
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}
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