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Code Issues Releases Wiki Activity

Use getopt_long() to parse command line.

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King_DuckZ 2016-03-15 21:10:52 +01:00
parent 96c6e967a0
commit c6b0fe49b5
1 changed files with 82 additions and 35 deletions
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117
src/main/main.c
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@ -15,67 +15,57 @@
* along with "dindexer". If not, see <http://www.gnu.org/licenses/>.
*/
#define _GNU_SOURCE 1
#include "dindexerConfig.h"
#include "findactions.h"
#include "helpers/lengthof.h"
#include "builtin_feats.h"
#include <string.h>
#include <stdio.h>
#include <iso646.h>
#include <unistd.h>
#include <stdlib.h>
#include "dindexerConfig.h"
#include "findactions.h"
#include "helpers/lengthof.h"
#include "builtin_feats.h"
#include <getopt.h>
static size_t foreach_avail_action ( int(*parFunc)(const char*, const void*), char** parList, size_t parCount, const void* parPass );
static int printf_stream ( const char* parMsg, const void* parStream );
static int same_action ( const char* parAction1, const void* parAction2 );
static void print_usage ( void );
static int manage_commandline ( int parArgc, char* parArgv[], char** parActions, size_t parActionCount, int* parShouldQuit );
int main (int parArgc, char* parArgv[]) {
size_t z;
size_t actions_count;
char** actions;
char* action_path;
char* specified_action;
size_t action_path_length;
size_t selected_action;
char** argv;
FILE* streamout;
int retval;
int showbuiltin;
int should_quit;
showbuiltin = (parArgc >= 2 ? not strcmp("--builtin", parArgv[1]) : 0);
find_actions(&actions, &actions_count);
if (0 == actions_count and not showbuiltin) {
retval = manage_commandline(parArgc, parArgv, actions, actions_count, &should_quit);
if (should_quit) {
free_actions(actions, actions_count);
return retval;
}
if (0 == actions_count) {
fprintf(stderr, "No actions found in \"%s\"\n", ACTIONS_SEARCH_PATH);
return 1;
}
if (parArgc < 2 or strcmp("-h", parArgv[1]) == 0 or strcmp("--help", parArgv[1]) == 0) {
if (parArgc < 2) {
streamout = stderr;
fprintf(stderr, "No action specified. ");
retval = 2;
}
else {
print_usage();
printf("\n");
streamout = stdout;
retval = 0;
}
fprintf(streamout, "Available actions are:\n");
foreach_avail_action(&printf_stream, actions, actions_count, streamout);
free_actions(actions, actions_count);
return retval;
}
else if (showbuiltin) {
print_builtin_feats();
free_actions(actions, actions_count);
return 0;
}
selected_action = foreach_avail_action(&same_action, actions, actions_count, parArgv[1]);
if (optind < parArgc)
specified_action = parArgv[optind];
else
specified_action = "";
selected_action = foreach_avail_action(&same_action, actions, actions_count, specified_action);
if (actions_count == selected_action) {
fprintf(stderr, "Unrecognized action \"%s\" - available actions are:\n", parArgv[1]);
fprintf(stderr, "Unrecognized action \"%s\" - available actions are:\n", specified_action);
foreach_avail_action(&printf_stream, actions, actions_count, stderr);
free_actions(actions, actions_count);
return 2;
@ -102,7 +92,7 @@ int main (int parArgc, char* parArgv[]) {
argv = (char**)malloc(sizeof(char*) * (parArgc - 1 + 1));
argv[0] = action_path;
for (z = 2; z <= parArgc; ++z) {
argv[z - 1] = parArgv[z];
argv[z - 1] = specified_action;
}
/*printf("would call %s\n", action_path);*/
@ -146,6 +136,63 @@ static int same_action (const char* parAction1, const void* parAction2) {
}
static void print_usage() {
printf("--help - show this help\n");
printf("--builtin - show build info\n");
printf("--help, -h - show this help\n");
printf("--builtin, -b - show build info\n");
}
static int manage_commandline (int parArgc, char* parArgv[], char** parActions, size_t parActionCount, int* parShouldQuit) {
int showbuiltin;
int showhelp;
int option_index;
int getopt_retval;
FILE* streamout;
int retval;
struct option opts[] = {
{ "builtin", no_argument, &showbuiltin, 1 },
{ "help", no_argument, &showhelp, 1 },
{ 0, 0, 0, 0 }
};
option_index = 0;
showbuiltin = showhelp = 0;
*parShouldQuit = 0;
while (0 <= (getopt_retval = getopt_long(parArgc, parArgv, "bh", opts, &option_index))) {
switch (getopt_retval) {
case 'h':
showhelp = 1;
break;
case 'b':
showbuiltin = 1;
break;
case '?':
*parShouldQuit = 1;
return 2;
}
option_index = 0;
}
if (parArgc < 2 or showhelp) {
*parShouldQuit = 1;
if (parArgc < 2) {
streamout = stderr;
fprintf(stderr, "No action specified. ");
retval = 2;
}
else {
print_usage();
printf("\n");
streamout = stdout;
retval = 0;
}
fprintf(streamout, "Available actions are:\n");
foreach_avail_action(&printf_stream, parActions, parActionCount, streamout);
return retval;
}
else if (showbuiltin) {
*parShouldQuit = 1;
print_builtin_feats();
return 0;
}
return 0;
}