mirror of https://github.com/pygos/init.git
125 lines
1.9 KiB
C
125 lines
1.9 KiB
C
#include <ctype.h>
|
|
|
|
#include "util.h"
|
|
|
|
static char *skpspc(char *ptr)
|
|
{
|
|
while (*ptr == ' ' || *ptr == '\t')
|
|
++ptr;
|
|
return ptr;
|
|
}
|
|
|
|
static int xdigit(int x)
|
|
{
|
|
if (isupper(x))
|
|
return x - 'A' + 0x0A;
|
|
if (islower(x))
|
|
return x - 'a' + 0x0A;
|
|
return x - '0';
|
|
}
|
|
|
|
static char *parse_str(char *src)
|
|
{
|
|
char *dst = src;
|
|
int c;
|
|
|
|
for (;;) {
|
|
c = *(src++);
|
|
|
|
switch (c) {
|
|
case '\\':
|
|
c = *(src++);
|
|
|
|
switch (c) {
|
|
case 'a': c = '\a'; break;
|
|
case 'b': c = '\b'; break;
|
|
case 'f': c = '\f'; break;
|
|
case 'n': c = '\n'; break;
|
|
case 't': c = '\t'; break;
|
|
case '\\': break;
|
|
case '"': break;
|
|
case 'x':
|
|
c = 0;
|
|
if (isxdigit(*src))
|
|
c = (c << 4) | xdigit(*(src++));
|
|
if (isxdigit(*src))
|
|
c = (c << 4) | xdigit(*(src++));
|
|
break;
|
|
case '0':
|
|
c = 0;
|
|
if (isdigit(*src) && *src < '8')
|
|
c = (c << 3) | (*(src++) - '0');
|
|
if (isdigit(*src) && *src < '8')
|
|
c = (c << 3) | (*(src++) - '0');
|
|
if (isdigit(*src) && *src < '8')
|
|
c = (c << 3) | (*(src++) - '0');
|
|
break;
|
|
default:
|
|
return NULL;
|
|
}
|
|
break;
|
|
case '"':
|
|
*(dst++) = '\0';
|
|
goto out;
|
|
}
|
|
|
|
*(dst++) = c;
|
|
}
|
|
out:
|
|
return src;
|
|
}
|
|
|
|
int splitkv(char *line, char **key, char **value)
|
|
{
|
|
*key = NULL;
|
|
*value = NULL;
|
|
|
|
line = skpspc(line);
|
|
|
|
if (*line == '#' || *line == '\0')
|
|
return 0;
|
|
|
|
if (!isalpha(*line))
|
|
return -1;
|
|
|
|
*key = line;
|
|
|
|
while (isalnum(*line))
|
|
++line;
|
|
|
|
if (*line == ' ' || *line == '\t') {
|
|
*(line++) = '\0';
|
|
line = skpspc(line);
|
|
}
|
|
|
|
if (*line != '=')
|
|
return -1;
|
|
|
|
*(line++) = '\0';
|
|
line = skpspc(line);
|
|
|
|
if (*line == '"') {
|
|
++line;
|
|
*value = line;
|
|
|
|
line = parse_str(line);
|
|
} else if (isalnum(*line)) {
|
|
*value = line;
|
|
|
|
while (isalnum(*line) || *line == '.' || *line == '_')
|
|
++line;
|
|
|
|
if (*line != '\0')
|
|
*(line++) = '\0';
|
|
} else {
|
|
return -1;
|
|
}
|
|
|
|
line = skpspc(line);
|
|
|
|
if (*line != '\0' && *line != '#')
|
|
return -1;
|
|
|
|
return 0;
|
|
}
|