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query string parsing utils

feature/UrlUtils
Kenneth Barbour 2018-10-12 13:17:37 -04:00 committed by Kenneth Barbour
parent c0e91aff7e
commit 466a5b2c3b
3 changed files with 47 additions and 4 deletions
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22
src/urlenc.cpp
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@ -44,19 +44,33 @@ int urlenc::query_key_pos(const char * query, const char * key)
{ {
int i = 0, j = 0; int i = 0, j = 0;
char q, k; char q, k;
if (key[0] == '\0') return -1; if (key[0] == '\0') return -1;
do { do {
q = query[i+j]; q = query[i+j];
k = key[j]; k = key[j];
if (k == '\0' && q == '=') if (k == '\0' && q == '=')
return i; return i;
if (q == k) { if (q == k) {
j++; j++;
} else i++; } else i++;
} while (q != '\0'); } while (q != '\0');
return -1; return -1;
} }
int urlenc::query_val_pos(const char * query, const char * key)
{
int i = 0;
int pos = query_key_pos(query, key);
if (pos == -1) return -1;
while (key[i] != '\0') i++;
i++;
return pos + i;
}
int urlenc::query_val_len(const char * query, const char * key)
{
int len = 0, i = query_val_pos(query, key);
if (i == -1) return -1;
while (query[i + len] != '\0' && query[i + len] != '&') len++;
return len;
}

2
src/urlenc.h
View File

@ -7,4 +7,6 @@ namespace urlenc
char hexval(char); char hexval(char);
int query_key_pos(const char *, const char *); int query_key_pos(const char *, const char *);
int query_val_pos(const char *, const char *);
int query_val_len(const char *, const char *);
} }

27
test/test_urlenc.cpp
View File

@ -92,4 +92,31 @@ TEST_CASE("Locate position of a key/value pair in the query component","[urlenc]
CHECK(query_key_pos("","") == -1); CHECK(query_key_pos("","") == -1);
CHECK(query_key_pos("","bar") == -1); CHECK(query_key_pos("","bar") == -1);
CHECK(query_key_pos("foo=bar&baz=qux","") == -1); CHECK(query_key_pos("foo=bar&baz=qux","") == -1);
CHECK(query_key_pos("foo=bar&bar=baz","bar") == 8);
}
TEST_CASE("Location position of a value in a key/value pair in the query component","[urlenc][query_val_pos]")
{
CHECK(query_val_pos("foo=1&bar=2&baz=3","bar") == 10);
CHECK(query_val_pos("foo=1&bar=2&baz=3","foo") == 4);
CHECK(query_val_pos("foo=1&bar=2&baz=3","qux") == -1);
CHECK(query_val_pos("foo=1&bar=&baz=3","baz") == 15);
CHECK(query_val_pos("j=10&bar=&baz=3","bar") == 9);
CHECK(query_val_pos("","") == -1);
CHECK(query_val_pos("","bar") == -1);
CHECK(query_val_pos("foo=bar&baz=qux","") == -1);
CHECK(query_val_pos("foo=bar&bar=baz","bar") == 12);
}
TEST_CASE("Determine length of value in key/value pair in the query component", "[urlenc][query_val_len]")
{
CHECK(query_val_len("foo=1&bar=2&baz=3","bar") == 1);
CHECK(query_val_len("foo=1&bar=2&baz=3","foo") == 1);
CHECK(query_val_len("foo=1&bar=2&baz=3","qux") == -1);
CHECK(query_val_len("foo=1&bar=&baz=39","baz") == 2);
CHECK(query_val_len("j=10&bar=&baz=3","bar") == 0);
CHECK(query_val_len("","") == -1);
CHECK(query_val_len("","bar") == -1);
CHECK(query_val_len("foo=bar&baz=qux","") == -1);
CHECK(query_val_len("foo=bar&bar=baz","bar") == 3);
} }