sopen

commit 154c3d32af887121dc5779607c3ddf784ee05893
parent f5f2ddb9fd5f8d8c93805614d9b56f0eddf04457
Author: Pollux <pollux@pollux.codes>
Date:   Tue, 11 Feb 2025 23:30:44 -0600

feat: Add command line arguments

Signed-off-by: Pollux <pollux@pollux.codes>

Diffstat:
M
sopen.1
 | 
13
+++++++++++--
M
sopen.c
 | 
76
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++----

2 files changed, 83 insertions(+), 6 deletions(-)
diff --git a/sopen.1 b/sopen.1
@@ -2,11 +2,20 @@
 .SH "NAME"
 sopen \- A suckless resources opener
 .SH "SYNOPSIS"
-.B sopen <url/file>
+.B sopen [-h] [-V] [-d] <url/file>
 .SH "DESCRIPTION"
 sopen is a minimal resource opener, like mime-open, that matches compile-time
 configured regular expressions against the url or file path provided and runs
 the desired program with the same url or path.
+.SH "OPTIONS"
+.TP
+.B \-d
+dry run (print command that would have been executed, but don't execute).
+.TP
+.B \-h
+print usage information to stdout, then exit.
+.TP
+.B \-V
+print version information to stdout, then exit.
 .SH "AUTHORS"
 sopen was written by Joseph "Pollux" Hand.
-.SH "SEE ALSO"
diff --git a/sopen.c b/sopen.c
@@ -1,5 +1,6 @@
 
 /* See LICENSE file for copyright and license details. */
+#include <getopt.h>
 #include <magic.h>
 #include <regex.h>
 #include <spawn.h>
@@ -13,6 +14,11 @@
 #define REGEX_PROTOCOL "^[a-z]*://"
 #define REGEX_URL      "^(([a-z]*)://(.*)/)?(.*)$"
 
+#define USAGE "usage: sopen [-h] [-v] [-d] <url/file>"
+
+#define STR_LITERAL(x) #x
+#define STRINGIFY(x) STR_LITERAL(x)
+
 typedef struct {
 	const char     *protocol_regex;
 	const char     *url_regex;
@@ -21,6 +27,10 @@ typedef struct {
 	const char     *program;
 } Rule;
 
+void            print_help();
+void            print_version();
+void            parse_args(const int argc, char *const *argv, int *dry_run,
+                           int *url_ind);
 int             parse_url(const char *url, char *protocol, char *file);
 int             match_rule(const Rule rule, const char *url,
                            const char *protocol, const char *file,
@@ -28,6 +38,50 @@ int             match_rule(const Rule rule, const char *url,
 
 #include "config.h"
 
+void
+print_help() {
+	printf(USAGE "\n");
+}
+
+void
+print_version() {
+	printf(STRINGIFY(PROGNAME) " " STRINGIFY(VERSION) "\n");
+	printf("CFLAGS:  " STRINGIFY(CFLAGS) "\n");
+	printf("LDFLAGS: " STRINGIFY(LDFLAGS) "\n");
+}
+
+void
+parse_args(const int argc, char *const *argv, int *dry_run, int *url_ind) {
+
+	char           *cvalue = NULL;
+	int             index;
+	int             c;
+
+	opterr = 0;
+
+	while((c = getopt(argc, argv, "dhV")) != -1) {
+		switch (c) {
+		case 'd':
+			*dry_run = 1;
+			break;
+		case 'h':
+			print_help();
+			exit(0);
+		case 'V':
+			print_version();
+			exit(0);
+		case '?':
+			fprintf(stderr,
+			        "Unknown option `\\x%x'. Run `sopen -h' for usage.\n",
+			        optopt);
+			exit(1);
+		default:
+			exit(255);
+		}
+	}
+	*url_ind = optind;
+}
+
 int
 parse_url(const char *url, char *protocol, char *file) {
 
@@ -61,6 +115,8 @@ match_rule(const Rule rule, const char *url, const char *protocol,
 	regex_t         regex;
 	int             res;
 
+	int             dry_run = 0;
+
 	res = regcomp(&regex, rule.url_regex, REG_EXTENDED);
 	if(res > 0) {
 		printf("Failed to compile url regex: %s\n", rule.url_regex);
@@ -102,16 +158,19 @@ match_rule(const Rule rule, const char *url, const char *protocol,
 }
 
 int
-main(int argc, const char **argv) {
+main(int argc, char *const *argv) {
 
 	int             res;
+	int             dry_run;
+	int             url_ind;
 
 	magic_t         cookie;
 
 	regex_t         has_protocol;
 
-	const char     *url;
 	const char     *mime_type;
+
+	const char     *url;
 	char            protocol[16];
 	char            file[1024];
 
@@ -124,7 +183,11 @@ main(int argc, const char **argv) {
 	}
 	magic_load(cookie, NULL);
 
-	url = argv[1];
+	parse_args(argc, argv, &dry_run, &url_ind);
+	url = argv[url_ind];
+
+	printf("%s\n", url);
+	printf("%d\n", dry_run);
 
 	res = regcomp(&has_protocol, REGEX_PROTOCOL, REG_EXTENDED);
 	if(res > 0)
@@ -145,10 +208,15 @@ main(int argc, const char **argv) {
 		res = match_rule(rules[n], url, protocol, file, mime_type);
 
 		if(res == 0) {
+
 			child_args[0] = (char *)rules[n].program;
 			child_args[1] = (char *)url;
 			child_args[2] = NULL;
-			execvp(rules[n].program, child_args);
+			if(dry_run) {
+				printf("%s %s\n", child_args[0], child_args[1]);
+			} else {
+				execvp(rules[n].program, child_args);
+			}
 			return 0;
 		}
 	}