* Copyright (C) 1999,2000 the Free Software Foundation.
* Copyright (C) 2000 Eazel, Inc.
* Copyright (C) 2001-2011 George (Jiri) Lebl
- * Copyright © 2019-2020 Nick Bowler
+ * Copyright © 2019-2021 Nick Bowler
*
* Author: George (Jiri) Lebl
*
#include <unistd.h>
#include <stdlib.h>
#include <sys/stat.h>
+#include <limits.h>
+#include <getopt.h>
#include "treefuncs.h"
#include "parse.h"
#include "main.h"
+enum {
+ SOPT_END = UCHAR_MAX,
+ LOPT_VERSION,
+ LOPT_NO_TOUCH,
+ LOPT_FILE_SEP,
+ LOPT_M4,
+ LOPT_M4_CLEAN,
+ LOPT_M4_DIR
+};
+
+static const char sopts[] = "wnho:";
+static const struct option lopts[] = {
+ { "help", 0, NULL, 'h' },
+ { "version", 0, NULL, LOPT_VERSION },
+ { "exit-on-warn", 0, NULL, 'w' },
+ { "no-exit-on-warn", 0, &exit_on_warn, FALSE },
+ { "for-cpp", 0, &for_cpp, TRUE },
+ { "no-extern-c", 0, &no_extern_c, TRUE },
+ { "no-gnu", 0, &no_gnu, TRUE },
+ { "no-touch", 0, NULL, LOPT_NO_TOUCH },
+ { "no-touch-headers", 0, &no_touch_headers, TRUE },
+ { "always-private-header", 0, &private_header, PRIVATE_HEADER_ALWAYS },
+ { "ondemand-private-header", 0, &private_header, PRIVATE_HEADER_ONDEMAND },
+ { "no-private-header", 0, &private_header, PRIVATE_HEADER_NEVER },
+ { "always-private-struct", 0, &always_private_struct, TRUE },
+ { "m4", 0, NULL, LOPT_M4 },
+ { "m4-clean", 0, NULL, LOPT_M4_CLEAN },
+ { "m4-dir", 0, NULL, LOPT_M4_DIR },
+ { "no-write", 0, NULL, 'n' },
+ { "no-lines", 0, &no_lines, TRUE },
+ { "no-self-alias", 0, &no_self_alias, TRUE },
+ { "no-kill-underscores", 0, NULL, 0 /* no-op */ },
+ { "output-dir", 1, NULL, 'o' },
+ { "file-sep", 2, NULL, LOPT_FILE_SEP },
+ { "gtk3", 0, >k3_ok, TRUE },
+ { 0 }
+};
+
char *filename = NULL;
int yyparse(void);
gboolean use_m4 = FALSE; /* preprocess sources with m4 */
-gboolean use_m4_clean = FALSE; /* preprocess sources with m4, no m4 flags */
char *m4_commandline = NULL;
#define M4_INCLUDE_DIR PKGDATADIR "/m4"
#define M4_BASE_FILENAME "gobm4.m4"
puts("End world hunger, donate to the World Food Programme: https://www.wfp.org/");
}
-static void
-parse_options(int argc, char *argv[])
+/*
+ * Called after getopt_long receives an --m4 argument. Immediately stop
+ * processing options. Then all non-option arguments seen so far together
+ * with all remaining arguments are appended to M4_COMMANDLINE. If m4_clean
+ * is false, then M4_FLAGS is inserted before the first non-option argument,
+ * if any.
+ *
+ * The resulting string is returned, which should be freed by the caller.
+ */
+static char *parse_m4_options(int argc, char **argv, gboolean m4_clean)
{
- int i;
- int got_file = FALSE;
- int no_opts = FALSE;
- int m4_opts = FALSE; /* if we are just passing on args to m4 */
-
- filename = NULL;
-
- for(i = 1 ; i < argc; i++) {
- if(m4_opts) {
- char *new_commandline;
- g_assert(m4_commandline!=NULL);
-
- /* check whether this one looks like the filename */
- if((!strcmp(argv[i],"-") || argv[i][0] != '-')
- && !got_file) {
- const gchar *m4_flags=use_m4_clean?"":M4_FLAGS;
- filename = argv[i];
- got_file = TRUE;
-
- /* insert flags before the filename */
- new_commandline=g_strconcat(m4_commandline,
- " ",
- m4_flags,
- " ",
- argv[i],
- NULL);
- }
+ char **nonopt = NULL, *save_argv0, *ret;
+ int opt;
- /* just an ordinary option */
- else
- new_commandline=g_strconcat(m4_commandline,
- " ",
- argv[i],
- NULL);
-
- /* free old commandline */
- g_free(m4_commandline);
- m4_commandline=new_commandline;
-
- } else if(no_opts ||
- argv[i][0] != '-') {
- /*must be a file*/
- if(got_file) {
- fprintf(stderr, "Specify only one file!\n");
- print_usage(stderr);
- exit(1);
- }
- filename = argv[i];
- got_file = TRUE;
- } else if(strcmp(argv[i], "--help")==0) {
- print_help();
- exit(0);
- } else if(strcmp(argv[i], "--version")==0) {
- print_version();
- exit(0);
- } else if(strcmp(argv[i], "--exit-on-warn")==0) {
- exit_on_warn = TRUE;
- } else if(strcmp(argv[i], "--no-exit-on-warn")==0) {
- exit_on_warn = FALSE;
- } else if(strcmp(argv[i], "--for-cpp")==0) {
- for_cpp = TRUE;
- } else if(strcmp(argv[i], "--no-touch")==0) {
- no_touch = TRUE;
- no_touch_headers = TRUE;
- } else if(strcmp(argv[i], "--no-touch-headers")==0) {
- no_touch_headers = TRUE;
- } else if(strcmp(argv[i], "--ondemand-private-header")==0) {
- private_header = PRIVATE_HEADER_ONDEMAND;
- } else if(strcmp(argv[i], "--always-private-header")==0) {
- private_header = PRIVATE_HEADER_ALWAYS;
- } else if(strcmp(argv[i], "--no-private-header")==0) {
- private_header = PRIVATE_HEADER_NEVER;
- } else if(strcmp(argv[i], "--no-gnu")==0) {
- no_gnu = TRUE;
- } else if(strcmp(argv[i], "--no-extern-c")==0) {
- no_extern_c = TRUE;
- } else if(strcmp(argv[i], "--no-write")==0) {
+ /* First, conclude getopt run and reset with remaining args */
+ getopt_long(optind, argv, sopts, lopts, NULL);
+ argv += optind-1;
+ argc -= optind-1;
+ optind = 0;
+
+ save_argv0 = argv[0];
+ argv[0] = M4_COMMANDLINE;
+
+ if (m4_clean) {
+ ret = g_strjoinv(" ", argv);
+ argv[0] = save_argv0;
+ return ret;
+ }
+
+ /* Locate first non-option argument, if any. */
+ while ((opt = getopt_long(argc, argv, "-", NULL, NULL)) != -1) {
+ if (opt == 1) {
+ nonopt = &argv[optind-2];
+ break;
+ }
+ }
+
+ /* If there is a non-option but the above didn't see it, must be "--" */
+ if (!nonopt && argv[optind])
+ nonopt = &argv[optind-2];
+
+ if (nonopt) {
+ /* Found non-option, insert M4_FLAGS just before it. */
+ char *save_argv[3] = { nonopt[0], nonopt[1], nonopt[2] };
+
+ nonopt[1] = M4_FLAGS;
+ nonopt[2] = NULL;
+ nonopt[0] = g_strjoinv(" ", argv);
+
+ nonopt[1] = save_argv[1];
+ nonopt[2] = save_argv[2];
+ ret = g_strjoinv(" ", nonopt);
+
+ g_free(nonopt[0]);
+ nonopt[0] = save_argv[0];
+ } else {
+ /* Only options, not inserting M4_FLAGS. */
+ ret = g_strjoinv(" ", argv);
+ }
+
+ argv[0] = save_argv0;
+ return ret;
+}
+
+static int parse_options(int argc, char **argv)
+{
+ gboolean show_m4_dir = FALSE, m4_clean = FALSE;
+ char *raw_file_sep = "-";
+ int opt;
+
+ opterr = 0;
+ while ((opt = getopt_long(argc, argv, sopts, lopts, NULL)) != -1) {
+ switch (opt) {
+ case 'n':
no_write = TRUE;
- } else if(strcmp(argv[i], "--no-lines")==0) {
- no_lines = TRUE;
- } else if(strcmp(argv[i], "--no-self-alias")==0) {
- no_self_alias = TRUE;
- } else if(strcmp(argv[i], "--no-kill-underscores")==0) {
- /* no op */;
- } else if(strcmp(argv[i], "--always-private-struct")==0) {
- always_private_struct = TRUE;
- } else if(strcmp(argv[i], "--m4-dir")==0) {
- printf("%s\n",M4_INCLUDE_DIR);
- exit(0);
- } else if(strcmp(argv[i], "--m4")==0) {
- use_m4 = TRUE;
- use_m4_clean=FALSE;
- m4_opts = TRUE;
- m4_commandline=g_strdup(M4_COMMANDLINE);
- } else if(strcmp(argv[i], "--m4-clean")==0) {
+ break;
+ case 'o':
+ output_dir = optarg;
+ break;
+ case 'w':
+ exit_on_warn = TRUE;
+ break;
+ case LOPT_FILE_SEP:
+ raw_file_sep = optarg ? optarg : "";
+ break;
+ case LOPT_M4_DIR:
+ show_m4_dir = TRUE;
+ break;
+ case LOPT_NO_TOUCH:
+ no_touch = no_touch_headers = TRUE;
+ break;
+ case LOPT_M4_CLEAN:
+ m4_clean = TRUE;
+ case LOPT_M4:
use_m4 = TRUE;
- use_m4_clean=TRUE;
- m4_opts = TRUE;
- m4_commandline=g_strdup(M4_COMMANDLINE);
- } else if (strcmp (argv[i], "-o") == 0 ||
- strcmp (argv[i], "--output-dir") == 0) {
- if (i+1 < argc) {
- output_dir = g_strdup (argv[i+1]);
- i++;
- } else {
- output_dir = NULL;
- }
- } else if (strncmp (argv[i], "-o=", strlen ("-o=")) == 0 ||
- strncmp (argv[i],
- "--output-dir=",
- strlen ("--output-dir=")) == 0) {
- char *p = strchr (argv[i], '=');
- g_assert (p != NULL);
- output_dir = g_strdup (p+1);
- } else if (strncmp (argv[i], "--file-sep=",
- strlen ("--file-sep=")) == 0) {
- char *p = strchr (argv[i], '=');
- g_assert (p != NULL);
- file_sep = *(p+1);
- } else if (strncmp (argv[i], "--file-sep",
- strlen ("--file-sep")) == 0) {
- if (i+1 < argc) {
- file_sep = (argv[i+1])[0];
- i++;
- } else {
- file_sep = 0;
- }
- } else if(strcmp(argv[i], "--gtk3")==0) {
- gtk3_ok = TRUE;
- } else if(strcmp(argv[i], "--")==0) {
- /*further arguments are files*/
- no_opts = TRUE;
- } else if(strncmp(argv[i], "--", 2)==0) {
- /*unknown long option*/
- fprintf(stderr, "Unknown option '%s'!\n", argv[i]);
- print_usage(stderr);
- exit(1);
- } else {
- /*by now we know we have a string starting with
- - which is a short option string*/
- char *p;
- for(p = argv[i] + 1; *p; p++) {
- switch(*p) {
- case 'w':
- exit_on_warn=TRUE;
- break;
- case 'n':
- no_write = TRUE;
- break;
- case 'h':
- case '?':
- print_help();
- exit(0);
- default:
- fprintf(stderr,
- "Unknown option '%c'!\n", *p);
- print_usage(stderr);
- exit(1);
- }
+ m4_commandline = parse_m4_options(argc, argv, m4_clean);
+ goto out;
+ case LOPT_VERSION:
+ print_version();
+ return 1;
+ default:
+ if (optopt == '?') {
+ case 'h':
+ print_help();
+ return 1;
}
+
+ /* Rewind getopt to get internal error messages. */
+ optind = 0, opterr = 1;
+ while (getopt_long(argc, argv, sopts, lopts, NULL)
+ != opt);
+ return -1;
+ case 0: /* no-op or option set by flag */;
}
}
-#if 0
- /* if we are using m4, and got no filename, append m4 flags now */
- if(!got_file && use_m4 && !use_m4_clean) {
- char *new_commandline;
- new_commandline=g_strconcat(m4_commandline,
- " ",
- M4_FLAGS,
- NULL);
- g_free(m4_commandline);
- m4_commandline=new_commandline;
+ filename = argv[optind];
+ if (argc > optind+1) {
+ char *s = g_strjoinv(" ", argv+optind+1);
+ fprintf(stderr, "%s: Warning: excess arguments ignored: %s\n",
+ g_get_prgname(), s);
+ g_free(s);
+ if (exit_on_warn)
+ return -1;
+ }
+out:
+ file_sep = raw_file_sep[0];
+ if (raw_file_sep[0] && raw_file_sep[1]) {
+ fprintf(stderr, "%s: Warning: --file-sep characters beyond the first are ignored\n",
+ g_get_prgname());
+ if (exit_on_warn)
+ return -1;
}
-#endif
+
+ if (show_m4_dir) {
+ printf("%s\n", M4_INCLUDE_DIR);
+ return 1;
+ }
+
+ return 0;
}
static void
int
main(int argc, char *argv[])
{
+ int rc;
+
g_set_prgname(argc > 0 ? argv[0] : "gob2");
- parse_options(argc, argv);
+ rc = parse_options(argc, argv);
+ if (rc < 0) {
+ print_usage(stderr);
+ return EXIT_FAILURE;
+ } else if (rc > 0) {
+ return EXIT_SUCCESS;
+ }
if(use_m4) {
yyin = popen(m4_commandline, "r");
projects / gob-dx.git / blobdiff