X-Git-Url: https://git.notmuchmail.org/git?p=notmuch;a=blobdiff_plain;f=command-line-arguments.c;h=39940d5fb9fd891076482c389782d93fd2783d20;hp=76b185f85be6d04487f6a107be03d820bf6cd234;hb=bc99087ff95d0cdada827f3b838d05e0c9448b63;hpb=0e386504345857725893d4da45338f00cc2147fa

diff --git a/command-line-arguments.c b/command-line-arguments.c
index 76b185f8..39940d5f 100644
--- a/command-line-arguments.c
+++ b/command-line-arguments.c
@@ -11,41 +11,109 @@
 */
 
 static notmuch_bool_t
-_process_keyword_arg (const notmuch_opt_desc_t *arg_desc, const char *arg_str) {
+_process_keyword_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
 
     const notmuch_keyword_t *keywords = arg_desc->keywords;
 
+    if (next == '\0') {
+	/* No keyword given */
+	arg_str = "";
+    }
+
     while (keywords->name) {
 	if (strcmp (arg_str, keywords->name) == 0) {
-	    if (arg_desc->output_var) {
-		*((int *)arg_desc->output_var) = keywords->value;
-	    }
+	    if (arg_desc->opt_flags)
+		*arg_desc->opt_flags |= keywords->value;
+	    else
+		*arg_desc->opt_keyword = keywords->value;
 	    return TRUE;
 	}
 	keywords++;
     }
-    fprintf (stderr, "unknown keyword: %s\n", arg_str);
+    if (next != '\0')
+	fprintf (stderr, "Unknown keyword argument \"%s\" for option \"%s\".\n", arg_str, arg_desc->name);
+    else
+	fprintf (stderr, "Option \"%s\" needs a keyword argument.\n", arg_desc->name);
     return FALSE;
 }
 
 static notmuch_bool_t
 _process_boolean_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
 
-    if (next == 0) {
-	*((notmuch_bool_t *)arg_desc->output_var) = TRUE;
+    if (next == '\0') {
+	*arg_desc->opt_bool = TRUE;
 	return TRUE;
     }
     if (strcmp (arg_str, "false") == 0) {
-	*((notmuch_bool_t *)arg_desc->output_var) = FALSE;
+	*arg_desc->opt_bool = FALSE;
 	return TRUE;
     }
     if (strcmp (arg_str, "true") == 0) {
-	*((notmuch_bool_t *)arg_desc->output_var) = TRUE;
+	*arg_desc->opt_bool = TRUE;
 	return TRUE;
     }
+    fprintf (stderr, "Unknown argument \"%s\" for (boolean) option \"%s\".\n", arg_str, arg_desc->name);
     return FALSE;
 }
 
+static notmuch_bool_t
+_process_int_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
+
+    char *endptr;
+    if (next == '\0' || arg_str[0] == '\0') {
+	fprintf (stderr, "Option \"%s\" needs an integer argument.\n", arg_desc->name);
+	return FALSE;
+    }
+
+    *arg_desc->opt_int = strtol (arg_str, &endptr, 10);
+    if (*endptr == '\0')
+	return TRUE;
+
+    fprintf (stderr, "Unable to parse argument \"%s\" for option \"%s\" as an integer.\n",
+	     arg_str, arg_desc->name);
+    return FALSE;
+}
+
+static notmuch_bool_t
+_process_string_arg (const notmuch_opt_desc_t *arg_desc, char next, const char *arg_str) {
+
+    if (next == '\0') {
+	fprintf (stderr, "Option \"%s\" needs a string argument.\n", arg_desc->name);
+	return FALSE;
+    }
+    if (arg_str[0] == '\0') {
+	fprintf (stderr, "String argument for option \"%s\" must be non-empty.\n", arg_desc->name);
+	return FALSE;
+    }
+    *arg_desc->opt_string = arg_str;
+    return TRUE;
+}
+
+/* Return number of non-NULL opt_* fields in opt_desc. */
+static int _opt_set_count (const notmuch_opt_desc_t *opt_desc)
+{
+    return
+	!!opt_desc->opt_inherit +
+	!!opt_desc->opt_bool +
+	!!opt_desc->opt_int +
+	!!opt_desc->opt_keyword +
+	!!opt_desc->opt_flags +
+	!!opt_desc->opt_string +
+	!!opt_desc->opt_position;
+}
+
+/* Return TRUE if opt_desc is valid. */
+static notmuch_bool_t _opt_valid (const notmuch_opt_desc_t *opt_desc)
+{
+    int n = _opt_set_count (opt_desc);
+
+    if (n > 1)
+	INTERNAL_ERROR ("more than one non-NULL opt_* field for argument \"%s\"",
+			opt_desc->name);
+
+    return n > 0;
+}
+
 /*
    Search for the {pos_arg_index}th position argument, return FALSE if
    that does not exist.
@@ -56,12 +124,12 @@ parse_position_arg (const char *arg_str, int pos_arg_index,
 		    const notmuch_opt_desc_t *arg_desc) {
 
     int pos_arg_counter = 0;
-    while (arg_desc->opt_type != NOTMUCH_OPT_END){
-	if (arg_desc->opt_type == NOTMUCH_OPT_POSITION) {
+    while (_opt_valid (arg_desc)) {
+	if (arg_desc->opt_position) {
 	    if (pos_arg_counter == pos_arg_index) {
-		if (arg_desc->output_var) {
-		    *((const char **)arg_desc->output_var) = arg_str;
-		}
+		*arg_desc->opt_position = arg_str;
+		if (arg_desc->present)
+		    *arg_desc->present = TRUE;
 		return TRUE;
 	    }
 	    pos_arg_counter++;
@@ -76,64 +144,75 @@ parse_position_arg (const char *arg_str, int pos_arg_index,
  * parse a possible value, and assign to *output_var
  */
 
-notmuch_bool_t
-parse_option (const char *arg,
-	      const notmuch_opt_desc_t *options) {
+int
+parse_option (int argc, char **argv, const notmuch_opt_desc_t *options, int opt_index)
+{
+    assert(argv);
+
+    const char *_arg = argv[opt_index];
 
-    assert(arg);
+    assert(_arg);
     assert(options);
 
-    arg += 2;
-
-    const notmuch_opt_desc_t *try = options;
-    while (try->opt_type != NOTMUCH_OPT_END) {
-	if (try->name && strncmp (arg, try->name, strlen (try->name)) == 0) {
-	    char next = arg[strlen (try->name)];
-	    const char *value= arg+strlen(try->name)+1;
-
-	    char *endptr;
-
-	    /* Everything but boolean arguments (switches) needs a
-	     * delimiter, and a non-zero length value. Boolean
-	     * arguments may take an optional =true or =false value.
-	     */
-	    if (next != '=' && next != ':' && next != 0) return FALSE;
-	    if (next == 0) {
-		if (try->opt_type != NOTMUCH_OPT_BOOLEAN)
-		    return FALSE;
-	    } else {
-		if (value[0] == 0) return FALSE;
-	    }
+    const char *arg = _arg + 2; /* _arg starts with -- */
+    const notmuch_opt_desc_t *try;
 
-	    if (try->output_var == NULL)
-		INTERNAL_ERROR ("output pointer NULL for option %s", try->name);
-
-	    switch (try->opt_type) {
-	    case NOTMUCH_OPT_KEYWORD:
-		return _process_keyword_arg (try, value);
-		break;
-	    case NOTMUCH_OPT_BOOLEAN:
-		return _process_boolean_arg (try, next, value);
-		break;
-	    case NOTMUCH_OPT_INT:
-		*((int *)try->output_var) = strtol (value, &endptr, 10);
-		return (*endptr == 0);
-		break;
-	    case NOTMUCH_OPT_STRING:
-		*((const char **)try->output_var) = value;
-		return TRUE;
-		break;
-	    case NOTMUCH_OPT_POSITION:
-	    case NOTMUCH_OPT_END:
-	    default:
-		INTERNAL_ERROR ("unknown or unhandled option type %d", try->opt_type);
-		/*UNREACHED*/
-	    }
+    const char *next_arg = NULL;
+    if (opt_index < argc - 1  && strncmp (argv[opt_index + 1], "--", 2) != 0)
+	next_arg = argv[opt_index + 1];
+
+    for (try = options; _opt_valid (try); try++) {
+	if (try->opt_inherit) {
+	    int new_index = parse_option (argc, argv, try->opt_inherit, opt_index);
+	    if (new_index >= 0)
+		return new_index;
 	}
-	try++;
+
+	if (! try->name)
+	    continue;
+
+	if (strncmp (arg, try->name, strlen (try->name)) != 0)
+	    continue;
+
+	char next = arg[strlen (try->name)];
+	const char *value = arg + strlen(try->name) + 1;
+
+	/*
+	 * If we have not reached the end of the argument (i.e. the
+	 * next character is not a space or delimiter) then the
+	 * argument could still match a longer option name later in
+	 * the option table.
+	 */
+	if (next != '=' && next != ':' && next != '\0')
+	    continue;
+
+	if (next == '\0' && next_arg != NULL && ! try->opt_bool) {
+	    next = ' ';
+	    value = next_arg;
+	    opt_index ++;
+	}
+
+	notmuch_bool_t opt_status = FALSE;
+	if (try->opt_keyword || try->opt_flags)
+	    opt_status = _process_keyword_arg (try, next, value);
+	else if (try->opt_bool)
+	    opt_status = _process_boolean_arg (try, next, value);
+	else if (try->opt_int)
+	    opt_status = _process_int_arg (try, next, value);
+	else if (try->opt_string)
+	    opt_status = _process_string_arg (try, next, value);
+	else
+	    INTERNAL_ERROR ("unknown or unhandled option \"%s\"", try->name);
+
+	if (! opt_status)
+	    return -1;
+
+	if (try->present)
+	    *try->present = TRUE;
+
+	return opt_index+1;
     }
-    fprintf (stderr, "Unrecognized option: --%s\n", arg);
-    return FALSE;
+    return -1;
 }
 
 /* See command-line-arguments.h for description */
@@ -155,17 +234,16 @@ parse_arguments (int argc, char **argv,
 	    }
 
 	} else {
+	    int prev_opt_index = opt_index;
 
 	    if (strlen (argv[opt_index]) == 2)
 		return opt_index+1;
 
-	    more_args = parse_option (argv[opt_index], options);
-	    if (more_args) {
-		opt_index++;
-	    } else {
-		opt_index = -1;
+	    opt_index = parse_option (argc, argv, options, opt_index);
+	    if (opt_index < 0) {
+		fprintf (stderr, "Unrecognized option: %s\n", argv[prev_opt_index]);
+		more_args = FALSE;
 	    }
-
 	}
     }