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#include "uwsgi.h"
char *uwsgi_str_split_nget(char *str, size_t len, char what, size_t pos, size_t *rlen) {
size_t i;
size_t current = 0;
char *choosen = str;
size_t choosen_len = 0;
*rlen = 0;
for(i=0;i<len;i++) {
if (!choosen) choosen = str + i;
if (str[i] == what) {
if (current == pos) {
if (choosen_len == 0) return NULL;
*rlen = choosen_len;
return choosen;
}
current++;
choosen = NULL;
choosen_len = 0;
}
else {
choosen_len ++;
}
}
if (current == pos) {
if (choosen_len == 0) return NULL;
*rlen = choosen_len;
return choosen;
}
return NULL;
}
size_t uwsgi_str_occurence(char *str, size_t len, char what) {
size_t count = 0;
size_t i;
for(i=0;i<len;i++) {
if (str[i] == what) count++;
}
return count;
}
// check if a string_list contains an item
struct uwsgi_string_list *uwsgi_string_list_has_item(struct uwsgi_string_list *list, char *key, size_t keylen) {
struct uwsgi_string_list *usl = list;
while (usl) {
if (keylen == usl->len) {
if (!memcmp(key, usl->value, keylen)) {
return usl;
}
}
usl = usl->next;
}
return NULL;
}
// lower a string
char *uwsgi_lower(char *str, size_t size) {
size_t i;
for (i = 0; i < size; i++) {
str[i] = tolower((int) str[i]);
}
return str;
}
// check if a string is contained in another one
char *uwsgi_str_contains(char *str, int slen, char what) {
int i;
for (i = 0; i < slen; i++) {
if (str[i] == what) {
return str + i;
}
}
return NULL;
}
int uwsgi_contains_n(char *s1, size_t s1_len, char *s2, size_t s2_len) {
size_t i;
char *ptr = s2;
for (i = 0; i < s1_len; i++) {
if (s1[i] == *ptr) {
ptr++;
if (ptr == s2 + s2_len) {
return 1;
}
}
else {
ptr = s2;
}
}
return 0;
}
// fast compare 2 sized strings
int uwsgi_strncmp(char *src, int slen, char *dst, int dlen) {
if (slen != dlen)
return 1;
return memcmp(src, dst, dlen);
}
// fast compare 2 sized strings (case insensitive)
int uwsgi_strnicmp(char *src, int slen, char *dst, int dlen) {
if (slen != dlen)
return 1;
return strncasecmp(src, dst, dlen);
}
// fast sized check of initial part of a string
int uwsgi_starts_with(char *src, int slen, char *dst, int dlen) {
if (slen < dlen)
return -1;
return memcmp(src, dst, dlen);
}
// unsized check
int uwsgi_startswith(char *src, char *what, int wlen) {
int i;
for (i = 0; i < wlen; i++) {
if (src[i] != what[i])
return -1;
}
return 0;
}
// concatenate strings
char *uwsgi_concatn(int c, ...) {
va_list s;
char *item;
int j = c;
char *buf;
size_t len = 1;
size_t tlen = 1;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
len += va_arg(s, int);
j--;
}
va_end(s);
buf = uwsgi_malloc(len);
memset(buf, 0, len);
j = c;
len = 0;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
tlen = va_arg(s, int);
memcpy(buf + len, item, tlen);
len += tlen;
j--;
}
va_end(s);
return buf;
}
char *uwsgi_concat2(char *one, char *two) {
char *buf;
size_t len = strlen(one) + strlen(two) + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, strlen(one));
memcpy(buf + strlen(one), two, strlen(two));
return buf;
}
char *uwsgi_concat4(char *one, char *two, char *three, char *four) {
char *buf;
size_t len = strlen(one) + strlen(two) + strlen(three) + strlen(four) + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, strlen(one));
memcpy(buf + strlen(one), two, strlen(two));
memcpy(buf + strlen(one) + strlen(two), three, strlen(three));
memcpy(buf + strlen(one) + strlen(two) + strlen(three), four, strlen(four));
return buf;
}
char *uwsgi_concat3(char *one, char *two, char *three) {
char *buf;
size_t len = strlen(one) + strlen(two) + strlen(three) + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, strlen(one));
memcpy(buf + strlen(one), two, strlen(two));
memcpy(buf + strlen(one) + strlen(two), three, strlen(three));
return buf;
}
char *uwsgi_concat2n(char *one, int s1, char *two, int s2) {
char *buf;
size_t len = s1 + s2 + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
return buf;
}
char *uwsgi_concat2nn(char *one, int s1, char *two, int s2, int *len) {
char *buf;
*len = s1 + s2 + 1;
buf = uwsgi_malloc(*len);
buf[*len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
return buf;
}
char *uwsgi_concat3n(char *one, int s1, char *two, int s2, char *three, int s3) {
char *buf;
size_t len = s1 + s2 + s3 + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
memcpy(buf + s1 + s2, three, s3);
return buf;
}
char *uwsgi_concat4n(char *one, int s1, char *two, int s2, char *three, int s3, char *four, int s4) {
char *buf;
size_t len = s1 + s2 + s3 + s4 + 1;
buf = uwsgi_malloc(len);
buf[len - 1] = 0;
memcpy(buf, one, s1);
memcpy(buf + s1, two, s2);
memcpy(buf + s1 + s2, three, s3);
memcpy(buf + s1 + s2 + s3, four, s4);
return buf;
}
// concat unsized strings
char *uwsgi_concat(int c, ...) {
va_list s;
char *item;
size_t len = 1;
int j = c;
char *buf;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
len += (int) strlen(item);
j--;
}
va_end(s);
buf = uwsgi_malloc(len);
memset(buf, 0, len);
j = c;
len = 0;
va_start(s, c);
while (j > 0) {
item = va_arg(s, char *);
if (item == NULL) {
break;
}
memcpy(buf + len, item, strlen(item));
len += strlen(item);
j--;
}
va_end(s);
return buf;
}
char *uwsgi_strncopy(char *s, int len) {
char *buf;
buf = uwsgi_malloc(len + 1);
buf[len] = 0;
memcpy(buf, s, len);
return buf;
}
// this move a string back of one char and put a 0 at the end (used in uwsgi parsers for buffer reusing)
char *uwsgi_cheap_string(char *buf, int len) {
int i;
char *cheap_buf = buf - 1;
for (i = 0; i < len; i++) {
*cheap_buf++ = buf[i];
}
buf[len - 1] = 0;
return buf - 1;
}
/*
status 0: append mode
status 1: single quote found
status 2: double quote found
status 3: backslash found (on 0)
status 4: backslash found (on 1)
status 5: backslash found (on 2)
*/
char ** uwsgi_split_quoted(char *what, size_t what_len, char *sep, size_t *rlen) {
size_t i;
int status = 0;
char *base = uwsgi_concat2n(what, what_len, "", 0);
char *item = NULL;
char *ptr = NULL;
*rlen = 0;
char **ret = (char **) uwsgi_malloc(sizeof(char *) * (what_len+1));
for(i=0;i<what_len;i++) {
if (!item) {
item = uwsgi_malloc((what_len - i)+1);
ptr = item;
}
if (status == 0) {
if (base[i] == '\\') {
status = 3;
}
else if (base[i] == '"') {
status = 2;
}
else if (base[i] == '\'') {
status = 1;
}
else if (strchr(sep, base[i])) {
*ptr++= 0;
ret[(*rlen)] = item; (*rlen)++;
item = NULL;
}
else {
*ptr++= base[i];
}
continue;
}
// backslash
if (status == 3) {
*ptr++= base[i];
status = 0;
continue;
}
// single quote
if (status == 1) {
if (base[i] == '\\') {
status = 4;
}
else if (base[i] == '\'') {
status = 0;
}
else {
*ptr++= base[i];
}
continue;
}
// double quote
if (status == 2) {
if (base[i] == '\\') {
status = 5;
}
else if (base[i] == '"') {
status = 0;
}
else {
*ptr++= base[i];
}
continue;
}
// backslash single quote
if (status == 4) {
*ptr++= base[i];
status = 1;
continue;
}
// backslash double quote
if (status == 5) {
*ptr++= base[i];
status = 2;
continue;
}
}
if (item) {
*ptr++= 0;
ret[(*rlen)] = item; (*rlen)++;
}
free(base);
return ret;
}
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