X-Git-Url: http://mj.ucw.cz/gitweb/?a=blobdiff_plain;f=ucw%2Fopt.c;h=9ef721d672d64d72c68d88fdd94a4e7e65657bb9;hb=bc2bbfcbe76e78db9cde27455ddbcfe1ddcc61d6;hp=edbd5223048d7c43d3a993d25d0058d6aab8a977;hpb=7b52f60afc7ab5c9e96975d2fe9b08f3018bbd60;p=libucw.git

diff --git a/ucw/opt.c b/ucw/opt.c
index edbd5223..9ef721d6 100644
--- a/ucw/opt.c
+++ b/ucw/opt.c
@@ -11,52 +11,29 @@
 #include <ucw/lib.h>
 #include <ucw/opt.h>
 #include <ucw/opt-internal.h>
+#include <ucw/gary.h>
 #include <ucw/stkstring.h>
 #include <ucw/strtonum.h>
 
 #include <alloca.h>
 #include <math.h>
 
-/***
- * Value flags defaults
- * ~~~~~~~~~~~~~~~~~~~~
- *
- * OPT_NO_VALUE for OPT_BOOL, OPT_SWITCH and OPT_INC
- * OPT_MAYBE_VALUE for OPT_STRING, OPT_UNS, OPT_INT
- * Some of the value flags (OPT_NO_VALUE, OPT_MAYBE_VALUE, OPT_REQUIRED_VALUE)
- * must be specified for OPT_CALL and OPT_USER.
- ***/
-static uns opt_default_value_flags[] = {
+static uint opt_default_value_flags[] = {
     [OPT_CL_BOOL] = OPT_NO_VALUE,
     [OPT_CL_STATIC] = OPT_MAYBE_VALUE,
+    [OPT_CL_MULTIPLE] = OPT_REQUIRED_VALUE,
     [OPT_CL_SWITCH] = OPT_NO_VALUE,
     [OPT_CL_INC] = OPT_NO_VALUE,
     [OPT_CL_CALL] = 0,
-    [OPT_CL_USER] = 0,
     [OPT_CL_SECTION] = 0,
     [OPT_CL_HELP] = 0
 };
 
-struct opt_context {
-  struct opt_precomputed * opts;
-  struct opt_precomputed ** shortopt;
-  struct opt_item ** hooks_before_arg;
-  struct opt_item ** hooks_before_value;
-  struct opt_item ** hooks_after_value;
-  short opt_count;
-  short hooks_before_arg_count;
-  short hooks_before_value_count;
-  short hooks_after_value_count;
-  int positional_max;
-  int positional_count;
-};
-
 void opt_failure(const char * mesg, ...) {
   va_list args;
   va_start(args, mesg);
   vfprintf(stderr, mesg, args);
-  fprintf(stderr, "\n");
-  opt_usage();
+  fprintf(stderr, "\nRun with --help for more information.\n");
   exit(OPT_EXIT_BAD_ARGS);
 }
 
@@ -80,22 +57,33 @@ void opt_precompute(struct opt_precomputed *opt, struct opt_item *item)
   opt->item = item;
   opt->count = 0;
   opt->name = item->name;
-  uns flags = item->flags;
+  uint flags = item->flags;
 
   if (item->letter >= OPT_POSITIONAL_TAIL) {
     flags &= ~OPT_VALUE_FLAGS;
     flags |= OPT_REQUIRED_VALUE;
   }
   if (!(flags & OPT_VALUE_FLAGS)) {
-    ASSERT(item->cls != OPT_CL_CALL && item->cls != OPT_CL_USER);
+    ASSERT(item->cls != OPT_CL_CALL);
     flags |= opt_default_value_flags[item->cls];
   }
 
   opt->flags = flags;
 }
 
+static void opt_invoke_hooks(struct opt_context *oc, uint event, struct opt_item *item, char *value)
+{
+  for (int i = 0; i < oc->hook_count; i++) {
+    struct opt_item *hook = oc->hooks[i];
+    if (hook->flags & event) {
+      void *data = (hook->flags & OPT_HOOK_INTERNAL) ? oc : hook->ptr;
+      hook->u.hook(item, event, value, data);
+    }
+  }
+}
+
 static struct opt_precomputed * opt_find_item_longopt(struct opt_context * oc, char * str) {
-  uns len = strlen(str);
+  uint len = strlen(str);
   struct opt_precomputed * candidate = NULL;
 
   for (int i = 0; i < oc->opt_count; i++) {
@@ -106,9 +94,22 @@ static struct opt_precomputed * opt_find_item_longopt(struct opt_context * oc, c
     if (!strncmp(opt->name, str, len)) {
       if (strlen(opt->name) == len)
 	return opt;
-    } else if (opt->item->cls == OPT_CL_BOOL && !strncmp("no-", str, 3) && !strncmp(opt->name, str+3, len-3)) {
-      if (strlen(opt->name) == len-3)
-	return opt;
+    } else if (opt->item->cls == OPT_CL_BOOL) {
+      if (opt->flags & OPT_NEGATIVE) {
+	// If the option is called no-X, match X as well
+	if (!strncmp("no-", opt->name, 3) && !strncmp(opt->name+3, str, len)) {
+	  if (strlen(opt->name) == len+3)
+	    return opt;
+	} else
+	  continue;
+      } else {
+	// Match no-X as well
+	if (!strncmp("no-", str, 3) && !strncmp(opt->name, str+3, len-3)) {
+	  if (strlen(opt->name) == len-3)
+	    return opt;
+	} else
+	  continue;
+      }
     } else
       continue;
 
@@ -124,28 +125,16 @@ static struct opt_precomputed * opt_find_item_longopt(struct opt_context * oc, c
   opt_failure("Invalid option --%s.", str);
 }
 
-// FIXME: Use simple-lists?
-#define OPT_PTR(type) ({ 			\
-  type * ptr; 					\
-  if (item->flags & OPT_MULTIPLE) { 		\
-    struct { 					\
-      cnode n; 					\
-      type v; 					\
-    } * n = xmalloc(sizeof(*n)); 		\
-    clist_add_tail(item->ptr, &(n->n)); 	\
-    ptr = &(n->v); 				\
-  } else 					\
-    ptr = item->ptr; 				\
-  ptr; })
-
 static void opt_parse_value(struct opt_context * oc, struct opt_precomputed * opt, char * value) {
   struct opt_item * item = opt->item;
 
   if (opt->count++ && (opt->flags & OPT_SINGLE))
     opt_failure("Option %s must be specified at most once.", THIS_OPT);
 
-  for (int i = 0; i < oc->hooks_before_value_count; i++)
-    oc->hooks_before_value[i]->u.call(item, value, oc->hooks_before_value[i]->ptr);
+  if (opt->flags & OPT_LAST_ARG)
+    oc->stop_parsing = 1;
+
+  opt_invoke_hooks(oc, OPT_HOOK_BEFORE_VALUE, item, value);
 
   switch (item->cls) {
     case OPT_CL_BOOL:
@@ -157,8 +146,15 @@ static void opt_parse_value(struct opt_context * oc, struct opt_precomputed * op
 	opt_failure("Boolean argument for %s has a strange value. Supported (case insensitive): 1/0, y/n, yes/no, true/false.", THIS_OPT);
       break;
     case OPT_CL_STATIC:
+    case OPT_CL_MULTIPLE:
       {
 	char * e = NULL;
+	void * ptr;
+	if (item->cls == OPT_CL_STATIC)
+	  ptr = item->ptr;
+	else
+	  ptr = GARY_PUSH_GENERIC(*(void **)item->ptr);
+#define OPT_PTR(type) ((type *) ptr)
 	switch (item->type) {
 	  case CT_INT:
 	    if (!value)
@@ -198,9 +194,17 @@ static void opt_parse_value(struct opt_context * oc, struct opt_precomputed * op
 	    else
 	      *OPT_PTR(const char *) = xstrdup(value);
 	    break;
+	  case CT_USER:
+	      {
+		char * e = item->u.utype->parser(value, ptr);
+		if (e)
+		  opt_failure("Cannot parse the value of %s: %s", THIS_OPT, e);
+		break;
+	      }
 	  default:
 	    ASSERT(0);
 	}
+#undef OPT_PTR
 	break;
       }
     case OPT_CL_SWITCH:
@@ -216,34 +220,31 @@ static void opt_parse_value(struct opt_context * oc, struct opt_precomputed * op
 	(*((int *)item->ptr))++;
       break;
     case OPT_CL_CALL:
-      item->u.call(item, value, item->ptr);
-      break;
-    case OPT_CL_USER:
       {
-	char * e = NULL;
-	e = item->u.utype->parser(value, OPT_PTR(void*));
-	if (e)
-	  opt_failure("Cannot parse the value of %s: %s", THIS_OPT, e);
+	void *data = (opt->flags & OPT_INTERNAL) ? oc : item->ptr;
+	item->u.call(item, value, data);
 	break;
       }
     default:
       ASSERT(0);
   }
 
-  for (int i = 0;i < oc->hooks_after_value_count; i++)
-    oc->hooks_after_value[i]->u.call(item, value, oc->hooks_after_value[i]->ptr);
+  opt_invoke_hooks(oc, OPT_HOOK_AFTER_VALUE, item, value);
 }
 
 static int opt_longopt(struct opt_context * oc, char ** argv, int index) {
   int eaten = 0;
   char * name_in = argv[index] + 2; // skipping the -- on the beginning
-  uns pos = strchrnul(name_in, '=') - name_in;
+  uint pos = strchrnul(name_in, '=') - name_in;
   struct opt_precomputed * opt = opt_find_item_longopt(oc, strndupa(name_in, pos));
   char * value = NULL;
 
   opt->flags |= OPT_SEEN_AS_LONG;
 
-  if (opt->item->cls == OPT_CL_BOOL && !strncmp(name_in, "no-", 3) && !strncmp(name_in+3, opt->item->name, pos-3)) {
+  if (opt->item->cls == OPT_CL_BOOL &&
+      ((opt->flags & OPT_NEGATIVE)
+         ? (!strncmp(opt->item->name, "no-", 3) && !strncmp(name_in, opt->item->name + 3, pos-3))
+         : (!strncmp(name_in, "no-", 3) && !strncmp(name_in+3, opt->item->name, pos-3)))) {
     if (name_in[pos])
       opt_failure("Option --%s must not have any value.", name_in);
     value = "n";
@@ -310,12 +311,12 @@ static int opt_shortopt(struct opt_context * oc, char ** argv, int index) {
 
 static void opt_positional(struct opt_context * oc, char * value) {
   oc->positional_count++;
-  uns id = oc->positional_count > oc->positional_max ? OPT_POSITIONAL_TAIL : OPT_POSITIONAL(oc->positional_count);
+  uint id = oc->positional_count > oc->positional_max ? OPT_POSITIONAL_TAIL : OPT_POSITIONAL(oc->positional_count);
   struct opt_precomputed * opt = oc->shortopt[id];
   if (!opt)
     opt_failure("Too many positional arguments.");
   else {
-    opt->flags &= OPT_SEEN_AS_LONG;
+    opt->flags &= ~OPT_SEEN_AS_LONG;
     opt_parse_value(oc, opt, value);
   }
 }
@@ -325,16 +326,9 @@ static void opt_count_items(struct opt_context *oc, const struct opt_section *se
   for (const struct opt_item *item = sec->opt; item->cls != OPT_CL_END; item++) {
     if (item->cls == OPT_CL_SECTION)
       opt_count_items(oc, item->u.section);
-    else if (item->cls == OPT_CL_HOOK) {
-      if (item->flags & OPT_HOOK_BEFORE_ARG)
-	oc->hooks_before_arg_count++;
-      else if (item->flags & OPT_HOOK_BEFORE_VALUE)
-	oc->hooks_before_value_count++;
-      else if (item->flags & OPT_HOOK_AFTER_VALUE)
-	oc->hooks_after_value_count++;
-      else
-	ASSERT(0);
-    } else if (item->letter || item->name) {
+    else if (item->cls == OPT_CL_HOOK)
+      oc->hook_count++;
+    else if (item->letter || item->name) {
       oc->opt_count++;
       if (item->letter > OPT_POSITIONAL_TAIL)
 	oc->positional_max++;
@@ -347,16 +341,9 @@ static void opt_prepare_items(struct opt_context *oc, const struct opt_section *
   for (struct opt_item *item = sec->opt; item->cls != OPT_CL_END; item++) {
     if (item->cls == OPT_CL_SECTION)
       opt_prepare_items(oc, item->u.section);
-    else if (item->cls == OPT_CL_HOOK) {
-      if (item->flags & OPT_HOOK_BEFORE_ARG)
-	oc->hooks_before_arg[oc->hooks_before_arg_count++] = item;
-      else if (item->flags & OPT_HOOK_BEFORE_VALUE)
-	oc->hooks_before_value[oc->hooks_before_value_count++] = item;
-      else if (item->flags & OPT_HOOK_AFTER_VALUE)
-	oc->hooks_after_value[oc->hooks_after_value_count++] = item;
-      else
-	ASSERT(0);
-    } else if (item->letter || item->name) {
+    else if (item->cls == OPT_CL_HOOK)
+      oc->hooks[oc->hook_count++] = item;
+    else if (item->letter || item->name) {
       struct opt_precomputed * opt = &oc->opts[oc->opt_count++];
       opt_precompute(opt, item);
       if (item->letter)
@@ -385,29 +372,26 @@ static void opt_check_required(struct opt_context *oc)
   }
 }
 
-void opt_parse(const struct opt_section * options, char ** argv) {
+int opt_parse(const struct opt_section * options, char ** argv) {
   struct opt_context * oc = alloca(sizeof(*oc));
   memset(oc, 0, sizeof (*oc));
+  oc->options = options;
 
   opt_count_items(oc, options);
   oc->opts = alloca(sizeof(*oc->opts) * oc->opt_count);
-  oc->shortopt = alloca(sizeof(*oc->shortopt) * (oc->positional_max + 257));
-  memset(oc->shortopt, 0, sizeof(*oc->shortopt) * (oc->positional_max + 257));
-  oc->hooks_before_arg = alloca(sizeof (*oc->hooks_before_arg) * oc->hooks_before_arg_count);
-  oc->hooks_before_value = alloca(sizeof (*oc->hooks_before_value) * oc->hooks_before_value_count);
-  oc->hooks_after_value = alloca(sizeof (*oc->hooks_after_value) * oc->hooks_after_value_count);
+  oc->shortopt = alloca(sizeof(*oc->shortopt) * (oc->positional_max + OPT_POSITIONAL_TAIL + 1));
+  memset(oc->shortopt, 0, sizeof(*oc->shortopt) * (oc->positional_max + OPT_POSITIONAL_TAIL + 1));
+  oc->hooks = alloca(sizeof (*oc->hooks) * oc->hook_count);
 
   oc->opt_count = 0;
-  oc->hooks_before_arg_count = 0;
-  oc->hooks_before_value_count = 0;
-  oc->hooks_after_value_count = 0;
+  oc->hook_count = 0;
   opt_prepare_items(oc, options);
 
   int force_positional = 0;
-  for (int i = 0; argv[i]; i++) {
+  int i;
+  for (i=0; argv[i] && !oc->stop_parsing; i++) {
     char *arg = argv[i];
-    for (int j = 0; j < oc->hooks_before_arg_count; j++)
-      oc->hooks_before_arg[j]->u.call(NULL, NULL, oc->hooks_before_arg[j]->ptr);
+    opt_invoke_hooks(oc, OPT_HOOK_BEFORE_ARG, NULL, NULL);
     if (arg[0] != '-' || force_positional)
       opt_positional(oc, arg);
     else {
@@ -424,4 +408,6 @@ void opt_parse(const struct opt_section * options, char ** argv) {
   }
 
   opt_check_required(oc);
+  opt_invoke_hooks(oc, OPT_HOOK_FINAL, NULL, NULL);
+  return i;
 }