LXR linux/tools/perf/util/alias.c

   1#include "cache.h"
   2#include "util.h"
   3#include "config.h"
   4
   5static const char *alias_key;
   6static char *alias_val;
   7
   8static 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
  20char *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
  28int 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
  79