ccan/ccan/ccan_tokenizer/_info

#include "config.h"
#include <string.h>
#include <stdio.h>

/**
 * ccan_tokenizer - A full-text lexer for C source files
 *
 * ccan_tokenizer generates a list of tokens given the contents of a C source
 * or header file.
 *
 * Example:
 *
 * #include <ccan/ccan_tokenizer/ccan_tokenizer.h>
 * #include <ccan/grab_file/grab_file.h>
 * #include <err.h>
 *
 * static void token_list_stats(const struct token_list *tl) {
 * 	size_t comment=0, white=0, stray=0, code=0, total=0;
 * 	size_t count = 0;
 * 	const struct token *i;
 *
 * 	for (i=tl->first; i; i=i->next) {
 * 		size_t size = i->orig_size;
 * 		total += size;
 * 		count++;
 *
 * 		if (token_type_is_comment(i->type))
 * 			comment += size;
 * 		else if (i->type == TOK_WHITE)
 * 			white += size;
 * 		else if (i->type == TOK_STRAY)
 * 			stray += size;
 * 		else
 * 			code += size;
 * 	}
 *
 * 	printf("Code:        %.02f%%\n"
 * 	       "White space: %.02f%%\n"
 * 	       "Comments:    %.02f%%\n",
 * 	       (double)code    * 100.0 / (double)total,
 * 	       (double)white   * 100.0 / (double)total,
 * 	       (double)comment * 100.0 / (double)total);
 * 	if (stray)
 * 		printf("Stray:       %.02f%%\n",
 * 			(double)stray * 100.0 / (double)total);
 * 	printf("Total size:  %zu bytes with %zu tokens\n",
 * 		total, count);
 * }
 *
 * int main(int argc, char *argv[]) {
 * 	size_t len;
 * 	char *file;
 * 	struct token_list *tl;
 * 	tok_message_queue mq;
 * 	queue_init(mq, NULL);
 *
 * 	//grab the file
 * 	if (argc != 2) {
 * 		fprintf(stderr, "Usage: %s source_file\n", argv[0]);
 * 		return 1;
 * 	}
 * 	file = grab_file(NULL, argv[1], &len);
 * 	if (!file)
 * 		err(1, "Could not read file %s", argv[1]);
 *
 * 	//tokenize the contents
 * 	tl = tokenize(file, file, len, &mq);
 *
 * 	//print warnings, errors, etc.
 * 	while (queue_count(mq)) {
 * 		struct tok_message msg = dequeue(mq);
 * 		tok_message_print(&msg, tl);
 * 	}
 *
 * 	//do neat stuff with the token list
 * 	token_list_stats(tl);
 *
 * 	//free stuff
 * 	talloc_free(file); //implicitly frees tl
 * 	queue_free(mq);
 *
 * 	return 0;
 * }
 *
 * License: BSD (3 clause)
 *
 * Ccanlint:
 *	// We actually depend on the LGPL dependencies
 *	license_depends_compat FAIL
 *	// We don't put the license line in all files.
 *	license_comment FAIL
 */
int main(int argc, char *argv[])
{
	/* Expect exactly one argument */
	if (argc != 2)
		return 1;

	if (strcmp(argv[1], "depends") == 0) {
		printf("ccan/darray\n");
		printf("ccan/talloc\n");
		return 0;
	}

	return 1;
}