$NetBSD: patch-ab,v 1.1.1.1 2007/01/04 02:51:02 rillig Exp $

Replaced the GNU regular expressions with POSIX regular expressions,
since the latter are more portable.

--- src/backends/libgbf_mkfile/gbf-mkfile-build.c.orig	2005-09-22 13:18:46.000000000 +0200
+++ src/backends/libgbf_mkfile/gbf-mkfile-build.c	2007-01-04 03:28:10.000000000 +0100
@@ -43,10 +43,11 @@ typedef struct {
 	GList *callbacks;
 
 	/* Regex structures. */
-	struct re_pattern_buffer dir_buf;
-	struct re_pattern_buffer warn_buf;
-	struct re_pattern_buffer err_buf;
-	struct re_registers reg;
+	regex_t dir_buf;
+	regex_t warn_buf;
+	regex_t err_buf;
+#define N_GROUPS 5		/* 1 + maximum number of groups + 1 */
+	regmatch_t reg[N_GROUPS];
 
 	/* Build info. */
 	char *build_dir;
@@ -60,12 +61,9 @@ build_info_free (BuildInfo *info)
 	
 	if (info->build_dir)
 		g_free (info->build_dir);
-	if (info->dir_buf.fastmap)
-		g_free (info->dir_buf.fastmap);
-	if (info->warn_buf.fastmap)
-		g_free (info->warn_buf.fastmap);
-	if (info->err_buf.fastmap)
-		g_free (info->err_buf.fastmap);
+	regfree (&info->dir_buf);
+	regfree (&info->warn_buf);
+	regfree (&info->err_buf);
 	g_free (info);
 }
 
@@ -84,6 +82,11 @@ build_msg (BuildInfo      *info,
 	}
 }
 
+/* Returns a copy of the ''n''th captured group. */
+#define GBF_GETGROUP(n)						\
+	g_strndup (line + info->reg[n].rm_so,			\
+		info->reg[n].rm_eo - info->reg[n].rm_so)
+
 static void
 parse_output (BuildInfo  *info,
 	      const char *line)
@@ -91,26 +94,20 @@ parse_output (BuildInfo  *info,
 	int line_length = strlen (line);
 
 	/* Check for directory changes. */
-	if (re_search (&info->dir_buf, line, line_length, 0,
-		       line_length, &info->reg) != -1) {
-		if (info->reg.num_regs >= 2) {
-			if (info->build_dir)
-				g_free (info->build_dir);
-			info->build_dir = g_strndup (line + info->reg.start[1],
-						     info->reg.end[1] - info->reg.start[1]);
-		}
+	if (regexec (&info->dir_buf, line, N_GROUPS, info->reg, 0) == 0) {
+		g_assert(info->reg[1].rm_so != -1);
+		g_free (info->build_dir);
+		info->build_dir = GBF_GETGROUP(1);
 	}
 
 	/* Check for warnings & errors. */
-	if (re_search (&info->warn_buf, line, line_length, 0,
-		       line_length, &info->reg) != -1) {
+	if (regexec (&info->warn_buf, line, N_GROUPS, info->reg, 0) == 0) {
 		GbfBuildWarning *warn;
 		char *text;
 
 		/* Create new warning. */
 		warn = g_new0 (GbfBuildWarning, 1);
-		text = g_strndup (line + info->reg.start[1],
-				  info->reg.end[1] - info->reg.start[1]);
+		text = GBF_GETGROUP(1);
 		if (text[0] != '/') { /* only prepend build_dir if path not absolute */
 			warn->filename = g_strconcat (info->build_dir, "/", text, NULL);
 			g_free (text);
@@ -118,25 +115,21 @@ parse_output (BuildInfo  *info,
 			warn->filename = text;
 		}
 
-		text = g_strndup (line + info->reg.start[2],
-				  info->reg.end[2] - info->reg.start[2]);
+		text = GBF_GETGROUP(2);
 		warn->line = atoi (text);
 		g_free (text);
-		warn->warning = g_strndup (line + info->reg.start[3],
-					   info->reg.end[3] - info->reg.start[3]);
+		warn->warning = GBF_GETGROUP(3);
 		warn->output = g_strdup (line);
 
 		build_msg (info, GBF_BUILD_WARNING, warn);
 		/* FIXME: We should free warn here, and make copy in gbf-build-info.c. */
-	} else if (re_search (&info->err_buf, line, line_length, 0,
-			      line_length, &info->reg) != -1) {
+	} else if (regexec(&info->err_buf, line, N_GROUPS, info->reg, 0) == 0) {
 		GbfBuildError *err;
 		char *text;
 
 		/* Create new error. */
 		err = g_new0 (GbfBuildError, 1);
-		text = g_strndup (line + info->reg.start[1],
-				  info->reg.end[1] - info->reg.start[1]);
+		text = GBF_GETGROUP(1);
 		if (text[0] != '/') { /* only prepend build_dir if path not absolute */
 			err->filename = g_strconcat (info->build_dir, "/", text, NULL);
 			g_free (text);
@@ -144,12 +137,10 @@ parse_output (BuildInfo  *info,
 			err->filename = text;
 		}
 
-		text = g_strndup (line + info->reg.start[2],
-				  info->reg.end[2] - info->reg.start[2]);
+		text = GBF_GETGROUP(2);
 		err->line = atoi (text);
 		g_free (text);
-		err->error = g_strndup (line + info->reg.start[3],
-					info->reg.end[3] - info->reg.start[3]);
+		err->error = GBF_GETGROUP(3);
 		err->output = g_strdup (line);
 
 		build_msg (info, GBF_BUILD_ERROR, err);
@@ -158,6 +149,7 @@ parse_output (BuildInfo  *info,
 		build_msg (info, GBF_BUILD_OUTPUT, (gpointer)line);
 	}
 }
+#undef GBF_GETGROUP
 
 static gboolean
 build_output_cb (GIOChannel  *chan,
@@ -197,24 +189,10 @@ build_output_cb (GIOChannel  *chan,
 }
 
 static gboolean
-compile_pattern (struct re_pattern_buffer *buf,
+compile_pattern (regex_t                  *buf,
 		 const char               *pattern)
 {
-	memset (buf, 0, sizeof (struct re_pattern_buffer));
-	buf->translate = NULL;
-	buf->fastmap = g_malloc (256);
-	buf->allocated = 0;
-	buf->buffer = NULL;
-	buf->can_be_null = 0;
-	buf->no_sub = 0;
-
-	if (!re_compile_pattern (pattern, strlen (pattern), buf)) {
-		if (re_compile_fastmap (buf) != 0) {
-			g_warning ("IMPORTANT REGEX FAILED TO CREASTE FASTMAP");
-			g_free (buf->fastmap);
-			buf->fastmap = NULL;
-		}
-	} else {
+	if (regcomp(buf, pattern, REG_EXTENDED) != 0) {
 		g_warning ("IMPORTANT REGEX FAILED TO COMPILE");
 		return FALSE;
 	}
@@ -239,7 +217,6 @@ gbf_build_run (GbfMkfileProject    *proj
 	char *tmp, *msg;
 	int output, err, pid;
 	GIOChannel *out_channel, *err_channel;
-	reg_syntax_t old_options;
 	GError *error = NULL;
 	const char *charset;
 	GNode *g_node;
@@ -342,9 +319,6 @@ gbf_build_run (GbfMkfileProject    *proj
 	info->build_dir = NULL;
 
 	/* Intialize regexs. */
-	old_options = re_syntax_options;
-	re_syntax_options = RE_SYNTAX_EGREP;
-
 	if (!compile_pattern (&info->dir_buf, dir_regex) ||
 	    !compile_pattern (&info->warn_buf, warn_regex) ||
 	    !compile_pattern (&info->err_buf, err_regex)) {
@@ -355,8 +329,6 @@ gbf_build_run (GbfMkfileProject    *proj
 		return -1;
 	}
 
-	re_syntax_options = old_options;
-
 	g_signal_emit_by_name (G_OBJECT (project), "build_start");
 
 	tmp = g_strjoinv (" ", (char **) argv);