Root/tools/perf/util/alias.c

1#include "cache.h"
2
3static const char *alias_key;
4static char *alias_val;
5
6static 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
17char *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
25int 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}
77
78

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