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refactor cJSONUtils_Pstrcasecmp

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This commit is contained in:
Max Bruckner 2017-04-30 12:53:00 +02:00
parent 44d313212b
commit b16bcc3c19
1 changed files with 12 additions and 11 deletions
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23
cJSON_Utils.c
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@ -70,34 +70,35 @@ static int cJSONUtils_strcasecmp(const unsigned char *string1, const unsigned ch
return tolower(*string1) - tolower(*string2); return tolower(*string1) - tolower(*string2);
} }
/* JSON Pointer implementation: */ /* Compare the next path element of two JSON pointers, two NULL pointers are considered unequal: */
static int cJSONUtils_Pstrcasecmp(const unsigned char *a, const unsigned char *e) static int cJSONUtils_Pstrcasecmp(const unsigned char *name, const unsigned char *pointer)
{ {
if (!a || !e) if ((name == NULL) || (pointer == NULL))
{ {
return (a == e) ? 0 : 1; /* both NULL? */ return 1;
} }
for (; *a && *e && (*e != '/'); (void)a++, e++) /* compare until next '/' */
for (; (*name != '\0') && (*pointer != '\0') && (*pointer != '/'); (void)name++, pointer++) /* compare until next '/' */
{ {
if (*e == '~') if (*pointer == '~')
{ {
/* check for escaped '~' (~0) and '/' (~1) */ /* check for escaped '~' (~0) and '/' (~1) */
if (!((e[1] == '0') && (*a == '~')) && !((e[1] == '1') && (*a == '/'))) if (((pointer[1] != '0') || (*name != '~')) && ((pointer[1] != '1') || (*name != '/')))
{ {
/* invalid escape sequence or wrong character in *a */ /* invalid escape sequence or wrong character in *name */
return 1; return 1;
} }
else else
{ {
e++; pointer++;
} }
} }
else if (tolower(*a) != tolower(*e)) else if (tolower(*name) != tolower(*pointer))
{ {
return 1; return 1;
} }
} }
if (((*e != 0) && (*e != '/')) != (*a != 0)) if (((*pointer != 0) && (*pointer != '/')) != (*name != 0))
{ {
/* one string has ended, the other not */ /* one string has ended, the other not */
return 1; return 1;