release/src-rt-6.x.4708/linux/linux-2.6.36/tools/perf/util/alias.c

   1 #include "cache.h"
   2
   3 static const char *alias_key;
   4 static char *alias_val;
   5
   6 static int alias_lookup_cb(const char *k, const char *v, void *cb __used)
   7 {
   8         if (!prefixcmp(k, "alias.") && !strcmp(k+6, alias_key)) {
   9                 if (!v)
  10                         return config_error_nonbool(k);
  11                 alias_val = strdup(v);
  12                 return 0;
  13         }
  14         return 0;
  15 }
  16
  17 char *alias_lookup(const char *alias)
  18 {
  19         alias_key = alias;
  20         alias_val = NULL;
  21         perf_config(alias_lookup_cb, NULL);
  22         return alias_val;
  23 }
  24
  25 int split_cmdline(char *cmdline, const char ***argv)
  26 {
  27         int src, dst, count = 0, size = 16;
  28         char quoted = 0;
  29
  30         *argv = malloc(sizeof(char*) * size);
  31
  32         /* split alias_string */
  33         (*argv)[count++] = cmdline;
  34         for (src = dst = 0; cmdline[src];) {
  35                 char c = cmdline[src];
  36                 if (!quoted && isspace(c)) {
  37                         cmdline[dst++] = 0;
  38                         while (cmdline[++src]
  39                                         && isspace(cmdline[src]))
  40                                 ; /* skip */
  41                         if (count >= size) {
  42                                 size += 16;
  43                                 *argv = realloc(*argv, sizeof(char*) * size);
  44                         }
  45                         (*argv)[count++] = cmdline + dst;
  46                 } else if (!quoted && (c == '\'' || c == '"')) {
  47                         quoted = c;
  48                         src++;
  49                 } else if (c == quoted) {
  50                         quoted = 0;
  51                         src++;
  52                 } else {
  53                         if (c == '\\' && quoted != '\'') {
  54                                 src++;
  55                                 c = cmdline[src];
  56                                 if (!c) {
  57                                         free(*argv);
  58                                         *argv = NULL;
  59                                         return error("cmdline ends with \\");
  60                                 }
  61                         }
  62                         cmdline[dst++] = c;
  63                         src++;
  64                 }
  65         }
  66
  67         cmdline[dst] = 0;
  68
  69         if (quoted) {
  70                 free(*argv);
  71                 *argv = NULL;
  72                 return error("unclosed quote");
  73         }
  74
  75         return count;
  76 }