start the config system, add the config file parser

openbox/Makefile.am

@@ -27,11 +27,11 @@ openbox3_LDADD=@LIBINTL@ ../render/librender.a
 openbox3_LDFLAGS=-export-dynamic
 openbox3_SOURCES=client.c event.c extensions.c focus.c frame.c openbox.c \
 	prop.c screen.c stacking.c xerror.c themerc.c timer.c dispatch.c \
-	engine.c plugin.c action.c grab.c
+	engine.c plugin.c action.c grab.c cparse.l config.c
 
 noinst_HEADERS=client.h event.h extensions.h focus.h frame.h geom.h gettext.h \
 	openbox.h prop.h screen.h stacking.h xerror.h themerc.h dispatch.h \
-	timer.h engine.h plugin.h action.h grab.h
+	timer.h engine.h plugin.h action.h grab.h config.h
 
 MAINTAINERCLEANFILES= Makefile.in
 

openbox/config.c

@@ -0,0 +1,37 @@
+#include "config.h"
+
+#ifdef HAVE_STDIO_H
+#  include <stdio.h>
+#endif
+
+static GSList *config = NULL;
+
+/* provided by cparse.l */
+void cparse_go(FILE *);
+
+
+void config_startup()
+{
+}
+
+void config_shutdown()
+{
+}
+
+void config_parse()
+{
+    FILE *file;
+    char *path;
+
+    path = g_build_filename(g_get_home_dir(), ".openbox", "rc3", NULL);
+    if ((file = fopen(path, "r")) != NULL) {
+        cparse_go(file);
+        fclose(file);
+    }
+}
+
+gboolean config_set(char *name, ConfigValueType type, ConfigValue value)
+{
+    g_message("Setting %s\n", name);
+    return TRUE;
+}

openbox/config.h

@@ -0,0 +1,29 @@
+#ifndef __config_h
+#define __config_h
+
+#include <glib.h>
+
+typedef enum {
+    Config_String,
+    Config_Integer
+} ConfigValueType;
+
+typedef union {
+    char *string;
+    int integer;
+} ConfigValue;
+
+typedef struct {
+    char *name;
+    ConfigValueType type;
+    ConfigValue value;
+} ConfigEntry;
+
+void config_startup();
+void config_shutdown();
+
+gboolean config_set(char *name, ConfigValueType type, ConfigValue value);
+
+void config_parse();
+
+#endif

openbox/cparse.l

@@ -0,0 +1,95 @@
+%{
+#include <glib.h>
+#include "config.h"
+
+static int yylineno = 1;
+static gboolean haserror = FALSE;
+static ConfigEntry entry = { NULL, -1 };
+
+static void stringvalue();
+static void numbervalue();
+static void identifier();
+static void newline();
+static int yywrap();
+%}
+
+number [0-9]+
+string \"[^"\n]*\"
+identifier [a-zA-Z][a-zA-Z0-9_]*
+white [ \t]*
+assign {white}={white}
+
+%%
+
+{string}/{white}\n stringvalue();
+{number}/{white}\n numbervalue();
+^{identifier}/{assign} identifier();
+\n newline();
+=
+[ \t]
+. haserror = TRUE;
+
+%%
+
+static void stringvalue()
+{
+    if (!haserror && entry.name != NULL && (signed)entry.type < 0) {
+        entry.type = Config_String;
+        entry.value.string = g_strdup(yytext+1); /* drop the left quote */
+        if (entry.value.string[yyleng-2] != '"')
+            printf("warning: improperly terminated string on line %d\n",
+                   yylineno);
+        else
+            entry.value.string[yyleng-2] = '\0';
+    } else
+        haserror = TRUE;
+}
+
+static void numbervalue()
+{
+    if (!haserror && entry.name != NULL && (signed)entry.type < 0) {
+        entry.type = Config_Integer;
+        entry.value.integer = atoi(yytext);
+    } else
+        haserror = TRUE;
+}
+
+static void identifier()
+{
+    g_print("identifier: %s\n", yytext);
+    entry.name = g_strdup(yytext);
+    entry.type = -1;
+}
+
+static void newline()
+{
+    if (!haserror && entry.name != NULL && (signed)entry.type >= 0) {
+        if (!config_set(entry.name, entry.type, entry.value))
+            g_warning("Invalid option in config file: '%s'\n", entry.name);
+    } else {
+        printf("Parser error in config file on line %d\n", yylineno);
+    }
+    g_free(entry.name);
+    entry.name = NULL;
+    if (entry.type == Config_String)
+        g_free(entry.value.string);
+    entry.type = -1;
+
+    haserror = FALSE;
+    ++yylineno;
+}
+
+static int yywrap()
+{
+    g_free(entry.name);
+    entry.name = NULL;
+    if (entry.type == Config_String)
+        g_free(entry.value.string);
+    return 1;
+}
+
+void cparse_go(FILE *file)
+{
+    yyin = file;
+    yylex();
+}

openbox/openbox.c

@@ -8,6 +8,7 @@
 #include "focus.h"
 #include "extensions.h"
 #include "gettext.h"
+#include "config.h"
 #include "grab.h"
 #include "engine.h"
 #include "themerc.h"
@@ -143,6 +144,7 @@ int main(int argc, char **argv)
      
     if (screen_annex()) { /* it will be ours! */
 	timer_startup();
+        config_startup();
 	render_startup();
 	font_startup();
 	themerc_startup();
@@ -154,6 +156,8 @@ int main(int argc, char **argv)
         grab_startup();
         plugin_startup();
 
+        config_parse();
+
         /* XXX load all plugins!! */
         plugin_open("focus");
         plugin_open("keyboard");
@@ -180,6 +184,7 @@ int main(int argc, char **argv)
 	engine_shutdown();
 	themerc_shutdown();
 	render_shutdown();
+        config_shutdown();
 	timer_shutdown();
     }