tools/perf/util/alias.c

   1 #include "cache.h"
   2 #include "util.h"
   3 #include "config.h"
   4
   5 static const char *alias_key;
   6 static char *alias_val;
   7
   8 static int alias_lookup_cb(const char *k, const char *v,
   9                            void *cb __maybe_unused)
  10 {
  11         if (!prefixcmp(k, "alias.") && !strcmp(k+6, alias_key)) {
  12                 if (!v)
  13                         return config_error_nonbool(k);
  14                 alias_val = strdup(v);
  15                 return 0;
  16         }
  17         return 0;
  18 }
  19
  20 char *alias_lookup(const char *alias)
  21 {
  22         alias_key = alias;
  23         alias_val = NULL;
  24         perf_config(alias_lookup_cb, NULL);
  25         return alias_val;
  26 }
  27
  28 int split_cmdline(char *cmdline, const char ***argv)
  29 {
  30         int src, dst, count = 0, size = 16;
  31         char quoted = 0;
  32
  33         *argv = malloc(sizeof(char*) * size);
  34
  35         /* split alias_string */
  36         (*argv)[count++] = cmdline;
  37         for (src = dst = 0; cmdline[src];) {
  38                 char c = cmdline[src];
  39                 if (!quoted && isspace(c)) {
  40                         cmdline[dst++] = 0;
  41                         while (cmdline[++src]
  42                                         && isspace(cmdline[src]))
  43                                 ; /* skip */
  44                         if (count >= size) {
  45                                 size += 16;
  46                                 *argv = realloc(*argv, sizeof(char*) * size);
  47                         }
  48                         (*argv)[count++] = cmdline + dst;
  49                 } else if (!quoted && (c == '\'' || c == '"')) {
  50                         quoted = c;
  51                         src++;
  52                 } else if (c == quoted) {
  53                         quoted = 0;
  54                         src++;
  55                 } else {
  56                         if (c == '\\' && quoted != '\'') {
  57                                 src++;
  58                                 c = cmdline[src];
  59                                 if (!c) {
  60                                         zfree(argv);
  61                                         return error("cmdline ends with \\");
  62                                 }
  63                         }
  64                         cmdline[dst++] = c;
  65                         src++;
  66                 }
  67         }
  68
  69         cmdline[dst] = 0;
  70
  71         if (quoted) {
  72                 zfree(argv);
  73                 return error("unclosed quote");
  74         }
  75
  76         return count;
  77 }
  78