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

   1 #include "parse.h"
   2 #include "config.h"
   3
   4 static GHashTable *reg = NULL;
   5 static ParseFunc func = NULL;
   6
   7 /* parse tokens from the [openbox] section of the rc file */
   8 static void parse_rc_token(ParseTokenType type, union ParseToken token);
   9
  10 void destkey(gpointer key) { g_free(key); }
  11
  12 void parse_startup()
  13 {
  14     reg = g_hash_table_new_full(g_str_hash, g_str_equal, destkey, NULL);
  15     func = NULL;
  16
  17     parse_reg_section("openbox", parse_rc_token);
  18 }
  19
  20 void parse_shutdown()
  21 {
  22     g_hash_table_destroy(reg);
  23 }
  24
  25 void parse_reg_section(char *section, ParseFunc func)
  26 {
  27     if (g_hash_table_lookup(reg, section) != NULL)
  28         g_warning("duplicate request for section '%s' in the rc file",
  29                   section);
  30     else
  31         g_hash_table_insert(reg, g_ascii_strdown(section, -1), (void*)func);
  32 }
  33
  34 void parse_free_token(ParseTokenType type, union ParseToken token)
  35 {
  36     switch (type) {
  37     case TOKEN_STRING:
  38         g_free(token.string);
  39         break;
  40     case TOKEN_IDENTIFIER:
  41         g_free(token.identifier);
  42         break;
  43     case TOKEN_REAL:
  44     case TOKEN_INTEGER:
  45     case TOKEN_BOOL:
  46     case TOKEN_LBRACKET:
  47     case TOKEN_RBRACKET:
  48     case TOKEN_LBRACE:
  49     case TOKEN_RBRACE:
  50     case TOKEN_EQUALS:
  51     case TOKEN_COMMA:
  52     case TOKEN_NEWLINE:
  53         break;
  54     }
  55 }
  56
  57 void parse_set_section(char *section)
  58 {
  59     func = (ParseFunc)g_hash_table_lookup(reg, section);
  60 }
  61
  62 void parse_token(ParseTokenType type, union ParseToken token)
  63 {
  64     if (func != NULL)
  65         func(type, token);
  66 }
  67
  68 static void parse_rc_token(ParseTokenType type, union ParseToken token)
  69 {
  70     static int got_eq = FALSE;
  71     static ParseTokenType got_val = 0;
  72     static char *id = NULL, *s = NULL;
  73     static int i;
  74     static gboolean b;
  75
  76     if (id == NULL) {
  77         if (type == TOKEN_IDENTIFIER) {
  78             id = token.identifier;
  79             return;
  80         } else {
  81             yyerror("syntax error");
  82         }
  83     } else if (!got_eq) {
  84         if (type == TOKEN_EQUALS) {
  85             got_eq = TRUE;
  86             return;
  87         } else {
  88             yyerror("syntax error");
  89         }
  90     } else if (!got_val) {
  91         if (type == TOKEN_STRING) {
  92             s = token.string;
  93             got_val = type;
  94             return;
  95         } else if (type == TOKEN_BOOL) {
  96             b = token.bool;
  97             got_val = type;
  98             return;
  99         } else if (type == TOKEN_INTEGER) {
 100             i = token.integer;
 101             got_val = type;
 102             return;
 103         } else
 104             yyerror("syntax error");
 105     } else if (type != TOKEN_NEWLINE) {
 106         yyerror("syntax error");
 107     } else {
 108         ConfigValue v;
 109
 110         switch (got_val) {
 111         case TOKEN_STRING:
 112             v.string = s;
 113             if (!config_set(id, Config_String, v))
 114                 yyerror("invalid value type");
 115             break;
 116         case TOKEN_BOOL:
 117             v.bool = b;
 118             if (!config_set(id, Config_Bool, v))
 119                 yyerror("invalid value type");
 120             break;
 121         case TOKEN_INTEGER:
 122             v.integer = i;
 123             if (!config_set(id, Config_Integer, v))
 124                 yyerror("invalid value type");
 125             break;
 126         default:
 127             g_assert_not_reached(); /* unhandled type got parsed */
 128         }
 129     }
 130
 131     g_free(id);
 132     g_free(s);
 133     id = s = NULL;
 134     got_eq = FALSE;
 135     got_val = 0;
 136     parse_free_token(type, token);
 137 }