big s/polyp/pulse/g

git-svn-id: file:///home/lennart/svn/public/pulseaudio/trunk@1033 fefdeb5f-60dc-0310-8127-8f9354f1896f

src/pulsecore/conf-parser.c

@@ -0,0 +1,181 @@
+/* $Id$ */
+
+/***
+  This file is part of PulseAudio.
+
+  PulseAudio is free software; you can redistribute it and/or modify
+  it under the terms of the GNU Lesser General Public License as published
+  by the Free Software Foundation; either version 2 of the License,
+  or (at your option) any later version.
+
+  PulseAudio is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with PulseAudio; if not, write to the Free Software
+  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
+  USA.
+***/
+
+#ifdef HAVE_CONFIG_H
+#include <config.h>
+#endif
+
+#include <assert.h>
+#include <string.h>
+#include <stdio.h>
+#include <errno.h>
+
+#include <pulse/xmalloc.h>
+
+#include <pulsecore/core-error.h>
+#include <pulsecore/log.h>
+#include <pulsecore/core-util.h>
+
+#include "conf-parser.h"
+
+#define WHITESPACE " \t\n"
+#define COMMENTS "#;\n"
+
+/* Run the user supplied parser for an assignment */
+static int next_assignment(const char *filename, unsigned line, const pa_config_item *t, const char *lvalue, const char *rvalue, void *userdata) {
+    assert(filename && t && lvalue && rvalue);
+    
+    for (; t->parse; t++)
+        if (!strcmp(lvalue, t->lvalue))
+            return t->parse(filename, line, lvalue, rvalue, t->data, userdata);
+
+    pa_log(__FILE__": [%s:%u] Unknown lvalue '%s'.", filename, line, lvalue);
+    
+    return -1;
+}
+
+/* Returns non-zero when c is contained in s */
+static int in_string(char c, const char *s) {
+    assert(s);
+    
+    for (; *s; s++)
+        if (*s == c)
+            return 1;
+    
+    return 0;
+}
+
+/* Remove all whitepsapce from the beginning and the end of *s. *s may
+ * be modified. */
+static char *strip(char *s) {
+    char *b = s+strspn(s, WHITESPACE);
+    char *e, *l = NULL;
+
+    for (e = b; *e; e++)
+        if (!in_string(*e, WHITESPACE))
+            l = e;
+
+    if (l)
+        *(l+1) = 0;
+
+    return b;
+}
+
+/* Parse a variable assignment line */
+static int parse_line(const char *filename, unsigned line, const pa_config_item *t, char *l, void *userdata) {
+    char *e, *c, *b = l+strspn(l, WHITESPACE);
+
+    if ((c = strpbrk(b, COMMENTS)))
+        *c = 0;
+    
+    if (!*b)
+        return 0;
+
+    if (!(e = strchr(b, '='))) {
+        pa_log(__FILE__": [%s:%u] Missing '='.", filename, line);
+        return -1;
+    }
+
+    *e = 0;
+    e++;
+
+    return next_assignment(filename, line, t, strip(b), strip(e), userdata);
+}
+
+/* Go through the file and parse each line */
+int pa_config_parse(const char *filename, FILE *f, const pa_config_item *t, void *userdata) {
+    int r = -1;
+    unsigned line = 0;
+    int do_close = !f;
+    assert(filename && t);
+    
+    if (!f && !(f = fopen(filename, "r"))) {
+        if (errno == ENOENT) {
+            r = 0;
+            goto finish;
+        }
+        
+        pa_log_warn(__FILE__": WARNING: failed to open configuration file '%s': %s",
+            filename, pa_cstrerror(errno));
+        goto finish;
+    }
+
+    while (!feof(f)) {
+        char l[256];
+        if (!fgets(l, sizeof(l), f)) {
+            if (feof(f))
+                break;
+            
+            pa_log_warn(__FILE__": WARNING: failed to read configuration file '%s': %s",
+                filename, pa_cstrerror(errno));
+            goto finish;
+        }
+            
+        if (parse_line(filename, ++line, t,  l, userdata) < 0)
+            goto finish;
+    }
+    
+    r = 0;
+    
+finish:
+
+    if (do_close && f)
+        fclose(f);
+    
+    return r;
+}
+
+int pa_config_parse_int(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
+    int *i = data;
+    int32_t k;
+    assert(filename && lvalue && rvalue && data);
+
+    if (pa_atoi(rvalue, &k) < 0) {
+        pa_log(__FILE__": [%s:%u] Failed to parse numeric value: %s", filename, line, rvalue);
+        return -1;
+    }
+    
+    *i = (int) k;
+    return 0; 
+}
+
+int pa_config_parse_bool(const char *filename, unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
+    int *b = data, k;
+    assert(filename && lvalue && rvalue && data);
+    
+    if ((k = pa_parse_boolean(rvalue)) < 0) {
+        pa_log(__FILE__": [%s:%u] Failed to parse boolean value: %s", filename, line, rvalue);
+        return -1;
+    }
+    
+    *b = k;
+    
+    return 0;
+}
+
+int pa_config_parse_string(const char *filename, PA_GCC_UNUSED unsigned line, const char *lvalue, const char *rvalue, void *data, PA_GCC_UNUSED void *userdata) {
+    char **s = data;
+    assert(filename && lvalue && rvalue && data);
+
+    pa_xfree(*s);
+    *s = *rvalue ? pa_xstrdup(rvalue) : NULL;
+    return 0;
+}