Dogcows Code - chaz/openbox/blob - parser/parse.c

   1 #include "parse.h"
   2 #include <glib.h>
   3
   4 struct Callback {
   5     char *tag;
   6     ParseCallback func;
   7     void *data;
   8 };
   9
  10 static GHashTable *callbacks;
  11
  12 static void destfunc(struct Callback *c)
  13 {
  14     g_free(c->tag);
  15     g_free(c);
  16 }
  17
  18 void parse_startup()
  19 {
  20     callbacks = g_hash_table_new_full(g_str_hash, g_str_equal, NULL,
  21                                       (GDestroyNotify)destfunc);
  22 }
  23
  24 void parse_shutdown()
  25 {
  26     g_hash_table_destroy(callbacks);
  27 }
  28
  29 void parse_register(const char *tag, ParseCallback func, void *data)
  30 {
  31     struct Callback *c;
  32
  33     if ((c = g_hash_table_lookup(callbacks, tag))) {
  34         g_warning("tag '%s' already registered", tag);
  35         return;
  36     }
  37
  38     c = g_new(struct Callback, 1);
  39     c->tag = g_strdup(tag);
  40     c->func = func;
  41     c->data = data;
  42     g_hash_table_insert(callbacks, c->tag, c);
  43 }
  44
  45 gboolean parse_load_rc(xmlDocPtr *doc, xmlNodePtr *root)
  46 {
  47     char *path;
  48     gboolean r = FALSE;
  49
  50     path = g_build_filename(g_get_home_dir(), ".openbox", "rc3", NULL);
  51     if (parse_load(path, "openbox_config", doc, root)) {
  52         r = TRUE;
  53     } else {
  54         g_free(path);
  55         path = g_build_filename(RCDIR, "rc3", NULL);
  56         if (parse_load(path, "openbox_config", doc, root)) {
  57             r = TRUE;
  58         }
  59     }
  60     g_free(path);
  61     if (!r)
  62         g_warning("unable to find a valid config file, using defaults");
  63     return r;
  64 }
  65
  66 gboolean parse_load(const char *path, const char *rootname,
  67                     xmlDocPtr *doc, xmlNodePtr *root)
  68 {
  69
  70     xmlLineNumbersDefault(1);
  71
  72     if ((*doc = xmlParseFile(path))) {
  73         *root = xmlDocGetRootElement(*doc);
  74         if (!*root) {
  75             xmlFreeDoc(*doc);
  76             *doc = NULL;
  77             g_warning("%s is an empty document", path);
  78         } else {
  79             if (xmlStrcasecmp((*root)->name, (const xmlChar*)rootname)) {
  80                 xmlFreeDoc(*doc);
  81                 *doc = NULL;
  82                 g_warning("document %s is of wrong type. root *root is "
  83                           "not 'openbox_config'", path);
  84             }
  85         }
  86     }
  87     if (!*doc)
  88         return FALSE;
  89     return TRUE;
  90 }
  91
  92 void parse_close(xmlDocPtr doc)
  93 {
  94     xmlFree(doc);
  95 }
  96
  97 void parse_tree(xmlDocPtr doc, xmlNodePtr node, void *nothing)
  98 {
  99     while (node) {
 100         struct Callback *c = g_hash_table_lookup(callbacks, node->name);
 101
 102         if (c)
 103             c->func(doc, node, c->data);
 104
 105         node = node->next;
 106     }
 107 }
 108
 109 char *parse_string(xmlDocPtr doc, xmlNodePtr node)
 110 {
 111     xmlChar *c = xmlNodeListGetString(doc, node->xmlChildrenNode, TRUE);
 112     char *s = g_strdup(c ? (char*)c : "");
 113     xmlFree(c);
 114     return s;
 115 }
 116
 117 int parse_int(xmlDocPtr doc, xmlNodePtr node)
 118 {
 119     xmlChar *c = xmlNodeListGetString(doc, node->xmlChildrenNode, TRUE);
 120     int i = atoi((char*)c);
 121     xmlFree(c);
 122     return i;
 123 }
 124
 125 gboolean parse_bool(xmlDocPtr doc, xmlNodePtr node)
 126 {
 127     xmlChar *c = xmlNodeListGetString(doc, node->xmlChildrenNode, TRUE);
 128     gboolean b = FALSE;
 129     if (!xmlStrcasecmp(c, (const xmlChar*) "true"))
 130         b = TRUE;
 131     else if (!xmlStrcasecmp(c, (const xmlChar*) "yes"))
 132         b = TRUE;
 133     else if (!xmlStrcasecmp(c, (const xmlChar*) "on"))
 134         b = TRUE;
 135     xmlFree(c);
 136     return b;
 137 }
 138
 139 gboolean parse_contains(const char *val, xmlDocPtr doc, xmlNodePtr node)
 140 {
 141     xmlChar *c = xmlNodeListGetString(doc, node->xmlChildrenNode, TRUE);
 142     gboolean r;
 143     r = !xmlStrcasecmp(c, (const xmlChar*) val);
 144     xmlFree(c);
 145     return r;
 146 }
 147
 148 xmlNodePtr parse_find_node(const char *tag, xmlNodePtr node)
 149 {
 150     while (node) {
 151         if (!xmlStrcasecmp(node->name, (const xmlChar*) tag))
 152             return node;
 153         node = node->next;
 154     }
 155     return NULL;
 156 }
 157
 158 gboolean parse_attr_int(const char *name, xmlNodePtr node, int *value)
 159 {
 160     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 161     gboolean r = FALSE;
 162     if (c) {
 163         *value = atoi((char*)c);
 164         r = TRUE;
 165     }
 166     xmlFree(c);
 167     return r;
 168 }
 169
 170 gboolean parse_attr_string(const char *name, xmlNodePtr node, char **value)
 171 {
 172     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 173     gboolean r = FALSE;
 174     if (c) {
 175         *value = g_strdup((char*)c);
 176         r = TRUE;
 177     }
 178     xmlFree(c);
 179     return r;
 180 }
 181
 182 gboolean parse_attr_contains(const char *val, xmlNodePtr node,
 183                              const char *name)
 184 {
 185     xmlChar *c = xmlGetProp(node, (const xmlChar*) name);
 186     gboolean r;
 187     r = !xmlStrcasecmp(c, (const xmlChar*) val);
 188     xmlFree(c);
 189     return r;
 190 }