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new --help option to the CLI

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cozis
2022-05-06 01:01:03 +02:00
parent 3c98eae0f2
commit 124814f763
1 changed files with 46 additions and 1 deletions
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cli.c
+46 -1
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@@ -97,8 +97,47 @@ static int fileconv(const char *input_file, const char *output_file,
return 0;
}
static void print_help(FILE *fp, char *name) {
fprintf(fp,
"\n"
" c2html is a tool to add HTML syntax highlighting to C code.\n"
"\n"
" Basically you give c2html some C code as input and it classifies \n"
" all the keywords, identifiers etc using <span> elements, associating \n"
" them with the appropriate class names. By applying a CSS stylesheet \n"
" to the generated output, you get the highliting!\n"
"\n"
" The usage is:\n"
" $ %s -i file.c -o file.html [--no-table] [--style file.css] [-p <prefix>]\n"
"\n"
" ..and here's a table of all available options:\n"
"\n"
" -h, --help Show this message\n"
"\n"
" -i, --input file.c File containing C code that needs\n"
" to be converted\n"
"\n"
" -o, --output file.html HTML file where the output will be\n"
" written to\n"
"\n"
" --style style.css CSS stylesheet that will be added\n"
" to the HTML output\n"
"\n"
" -p, --prefix <prefix> The prefix of the HTML element's\n"
" class names. The default is \"c2h-\"\n"
"\n"
" --no-table Use <br /> elements to split lines\n"
" instead of using a <table>\n"
"\n",
name);
}
int main(int argc, char **argv)
{
if(argc == 1) {
print_help(stdout, argv[0]);
return 0;
}
/* Parse command-line arguments */
char *input_file = NULL,
@@ -106,8 +145,14 @@ int main(int argc, char **argv)
*style_file = NULL,
*prefix = NULL;
bool notable = 0;
for(int i = 1; i < argc; i += 1) {
if(!strcmp(argv[i], "-i") || !strcmp(argv[i], "--input")) {
if(!strcmp(argv[i], "-h") || !strcmp(argv[i], "--help")) {
print_help(stdout, argv[0]);
return -1;
} else if(!strcmp(argv[i], "-i") || !strcmp(argv[i], "--input")) {
i += 1;
if(i == argc || argv[i][0] == '-') {
fprintf(stderr, "Error: Missing argument after %s\n", argv[i-1]);