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[CODIFF]: Convert codiff to argp 

Signed-off-by: Arnaldo Carvalho de Melo <acme@ghostprotocols.net>
This commit is contained in:
Arnaldo Carvalho de Melo 2007-03-30 10:37:37 -03:00
parent 78beb03ca1
commit 6bcf3751df
1 changed files with 57 additions and 40 deletions
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97
codiff.c
View File

@ -7,24 +7,15 @@
published by the Free Software Foundation.
*/
#include <argp.h>
#include <assert.h>
#include <dwarf.h>
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "dwarves.h"
static struct option long_options[] = {
{ "help", no_argument, NULL, 'h' },
{ "terse_type_changes", no_argument, NULL, 't' },
{ "structs", no_argument, NULL, 's' },
{ "functions", no_argument, NULL, 'f' },
{ "verbose", no_argument, NULL, 'V' },
{ NULL, 0, NULL, 0, }
};
static int show_struct_diffs;
static int show_function_diffs;
static int verbose;
@ -44,19 +35,6 @@ static uint32_t total_nr_functions_changed;
static uint32_t total_function_bytes_added;
static uint32_t total_function_bytes_removed;
static void usage(void)
{
fprintf(stderr,
"usage: codiff [options] <old_file> <new_file>\n"
" where: \n"
" -h, --help usage options\n"
" -s, --structs show struct diffs\n"
" -f, --functions show function diffs\n"
" -t, --terse_type_changes show terse type changes\n"
" -V, --verbose show diffs details\n"
" without options all diffs are shown\n");
}
struct diff_info {
const struct tag *tag;
const struct cu *cu;
@ -591,32 +569,71 @@ static void print_total_function_diff(const char *filename)
putchar('\n');
}
static const struct argp_option codiff__options[] = {
{
.key = 's',
.name = "structs",
.doc = "show struct diffs",
},
{
.key = 'f',
.name = "functions",
.doc = "show function diffs",
},
{
.key = 't',
.name = "terse_type_changes",
.doc = "show terse type changes",
},
{
.key = 'V',
.name = "verbose",
.doc = "show diffs details",
},
{
.name = NULL,
}
};
static error_t codiff__options_parser(int key, char *arg __unused,
struct argp_state *state __unused)
{
switch (key) {
case 'f': show_function_diffs = 1; break;
case 's': show_struct_diffs = 1; break;
case 't': show_terse_type_changes = 1; break;
case 'V': verbose = 1; break;
default: return ARGP_ERR_UNKNOWN;
}
return 0;
}
static const char codiff__args_doc[] = "[OLD_FILE] [NEW_FILE]";
static struct argp codiff__argp = {
.options = codiff__options,
.parser = codiff__options_parser,
.args_doc = codiff__args_doc,
};
int main(int argc, char *argv[])
{
int option, option_index, err;
int remaining, err;
struct cus *old_cus, *new_cus;
const char *old_filename, *new_filename;
while ((option = getopt_long(argc, argv, "fhstV",
long_options, &option_index)) >= 0)
switch (option) {
case 'f': show_function_diffs = 1; break;
case 's': show_struct_diffs = 1; break;
case 't': show_terse_type_changes = 1; break;
case 'V': verbose = 1; break;
case 'h': usage(); return EXIT_SUCCESS;
default: usage(); return EXIT_FAILURE;
}
argp_parse(&codiff__argp, argc, argv, 0, &remaining, NULL);
if (optind < argc) {
switch (argc - optind) {
case 2: old_filename = argv[optind++];
new_filename = argv[optind++]; break;
if (remaining < argc) {
switch (argc - remaining) {
case 2: old_filename = argv[remaining++];
new_filename = argv[remaining++]; break;
case 1:
default: usage(); return EXIT_FAILURE;
default: goto failure;
}
} else {
usage();
failure:
argp_help(&codiff__argp, stderr, ARGP_HELP_SEE, "codiff");
return EXIT_FAILURE;
}