gluon-web: clean up buffer handling
This commit is contained in:
Matthias Schiffer
parent
624d969c52
commit
5a20f9794c
@ -27,7 +27,7 @@ static inline uint16_t get_le16(const uint8_t *d) {
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return (((uint16_t)d[1]) << 8) | d[0];
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}
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static uint32_t sfh_hash(const void *input, int len)
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static uint32_t sfh_hash(const void *input, size_t len)
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{
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const uint8_t *data = input;
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uint32_t hash = len, tmp;
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@ -228,7 +228,7 @@ static lmo_entry_t * lmo_find_entry(lmo_archive_t *ar, uint32_t hash)
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return NULL;
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}
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int lmo_translate(const char *key, int keylen, char **out, int *outlen)
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int lmo_translate(const char *key, size_t keylen, char **out, size_t *outlen)
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{
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uint32_t hash;
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lmo_entry_t *e;
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@ -70,6 +70,6 @@ typedef struct lmo_catalog lmo_catalog_t;
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int lmo_load_catalog(const char *lang, const char *dir);
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int lmo_change_catalog(const char *lang);
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int lmo_translate(const char *key, int keylen, char **out, int *outlen);
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int lmo_translate(const char *key, size_t keylen, char **out, size_t *outlen);
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#endif
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@ -67,13 +67,13 @@ static int template_L_parse_string(lua_State *L)
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static int template_L_pcdata(lua_State *L)
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{
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size_t len = 0;
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size_t len = 0, outlen;
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const char *str = luaL_checklstring(L, 1, &len);
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char *res = pcdata(str, len);
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char *res = pcdata(str, len, &outlen);
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if (res != NULL)
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{
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lua_pushstring(L, res);
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lua_pushlstring(L, res, outlen);
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free(res);
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return 1;
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@ -92,7 +92,7 @@ static int template_L_load_catalog(lua_State *L) {
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static int template_L_translate(lua_State *L) {
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size_t len;
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char *tr;
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int trlen;
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size_t trlen;
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const char *key = luaL_checklstring(L, 1, &len);
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switch (lmo_translate(key, len, &tr, &trlen))
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@ -20,27 +20,24 @@
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#include "template_utils.h"
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#include "template_lmo.h"
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/* initialize a buffer object */
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struct template_buffer * buf_init(int size)
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{
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struct template_buffer *buf;
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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if (size <= 0)
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/* initialize a buffer object */
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struct template_buffer * buf_init(size_t size)
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{
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if (size < 1024)
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size = 1024;
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buf = malloc(sizeof(*buf));
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struct template_buffer *buf = malloc(sizeof(*buf));
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if (buf != NULL)
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{
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buf->fill = 0;
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if (buf != NULL) {
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buf->size = size;
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buf->data = malloc(buf->size);
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if (buf->data != NULL)
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{
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if (buf->data != NULL) {
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buf->dptr = buf->data;
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buf->data[0] = 0;
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return buf;
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}
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@ -51,57 +48,48 @@ struct template_buffer * buf_init(int size)
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}
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/* grow buffer */
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static int buf_grow(struct template_buffer *buf, int size)
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static bool buf_grow(struct template_buffer *buf, size_t len)
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{
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unsigned int off = (buf->dptr - buf->data);
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char *data;
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size_t off = buf->dptr - buf->data, left = buf->size - off;
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if (len <= left)
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return true;
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if (size <= 0)
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size = 1024;
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size_t diff = len - left;
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if (diff < 1024)
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diff = 1024;
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data = realloc(buf->data, buf->size + size);
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char *data = realloc(buf->data, buf->size + diff);
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if (data == NULL)
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return false;
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if (data != NULL)
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{
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buf->data = data;
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buf->dptr = data + off;
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buf->size += size;
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buf->size += diff;
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return buf->size;
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}
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return 0;
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return true;
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}
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/* put one char into buffer object */
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static int buf_putchar(struct template_buffer *buf, char c)
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static bool buf_putchar(struct template_buffer *buf, char c)
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{
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if( ((buf->fill + 1) >= buf->size) && !buf_grow(buf, 0) )
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return 0;
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if (!buf_grow(buf, 1))
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return false;
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*(buf->dptr++) = c;
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*(buf->dptr) = 0;
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buf->fill++;
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return 1;
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return true;
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}
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/* append data to buffer */
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int buf_append(struct template_buffer *buf, const char *s, int len)
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bool buf_append(struct template_buffer *buf, const char *s, size_t len)
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{
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if ((buf->fill + len + 1) >= buf->size)
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{
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if (!buf_grow(buf, len + 1))
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return 0;
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}
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if (!buf_grow(buf, len))
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return false;
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memcpy(buf->dptr, s, len);
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buf->fill += len;
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buf->dptr += len;
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*(buf->dptr) = 0;
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return len;
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return true;
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}
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/* destroy buffer object and return pointer to data */
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@ -115,7 +103,7 @@ char * buf_destroy(struct template_buffer *buf)
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/* calculate the number of expected continuation chars */
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static inline int mb_num_chars(unsigned char c)
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static inline size_t mb_num_chars(unsigned char c)
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{
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if ((c & 0xE0) == 0xC0)
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return 2;
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@ -132,14 +120,14 @@ static inline int mb_num_chars(unsigned char c)
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}
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/* test whether the given byte is a valid continuation char */
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static inline int mb_is_cont(unsigned char c)
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static inline bool mb_is_cont(unsigned char c)
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{
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return ((c >= 0x80) && (c <= 0xBF));
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}
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/* test whether the byte sequence at the given pointer with the given
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* length is the shortest possible representation of the code point */
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static inline int mb_is_shortest(unsigned char *s, int n)
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static inline bool mb_is_shortest(const unsigned char *s, size_t n)
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{
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switch (n)
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{
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@ -179,19 +167,19 @@ static inline int mb_is_shortest(unsigned char *s, int n)
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((*(s+5) >> 6) == 0x02));
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}
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return 1;
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return true;
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}
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/* test whether the byte sequence at the given pointer with the given
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* length is an UTF-16 surrogate */
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static inline int mb_is_surrogate(unsigned char *s, int n)
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static inline bool mb_is_surrogate(const unsigned char *s, size_t n)
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{
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return ((n == 3) && (*s == 0xED) && (*(s+1) >= 0xA0) && (*(s+1) <= 0xBF));
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}
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/* test whether the byte sequence at the given pointer with the given
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* length is an illegal UTF-8 code point */
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static inline int mb_is_illegal(unsigned char *s, int n)
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static inline bool mb_is_illegal(const unsigned char *s, size_t n)
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{
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return ((n == 3) && (*s == 0xEF) && (*(s+1) == 0xBF) &&
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(*(s+2) >= 0xBE) && (*(s+2) <= 0xBF));
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@ -200,14 +188,13 @@ static inline int mb_is_illegal(unsigned char *s, int n)
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/* scan given source string, validate UTF-8 sequence and store result
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* in given buffer object */
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static int validate_utf8(unsigned char **s, unsigned int l, struct template_buffer *buf)
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static size_t validate_utf8(const unsigned char **s, size_t l, struct template_buffer *buf)
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{
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unsigned char *ptr = *s;
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unsigned int o = 0, v, n;
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const unsigned char *ptr = *s;
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size_t o = 0, v, n;
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/* ascii byte without null */
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if ((*(ptr+0) >= 0x01) && (*(ptr+0) <= 0x7F))
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{
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if ((*(ptr+0) >= 0x01) && (*(ptr+0) <= 0x7F)) {
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if (!buf_putchar(buf, *ptr++))
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return 0;
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@ -215,8 +202,7 @@ static int validate_utf8(unsigned char **s, unsigned int l, struct template_buff
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}
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/* multi byte sequence */
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else if ((n = mb_num_chars(*ptr)) > 1)
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{
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else if ((n = mb_num_chars(*ptr)) > 1) {
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/* count valid chars */
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for (v = 1; (v <= n) && ((o+v) < l) && mb_is_cont(*(ptr+v)); v++);
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@ -238,7 +224,7 @@ static int validate_utf8(unsigned char **s, unsigned int l, struct template_buff
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!mb_is_surrogate(ptr, n) && !mb_is_illegal(ptr, n))
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{
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/* copy sequence */
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if (!buf_append(buf, (char *)ptr, n))
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if (!buf_append(buf, (const char *)ptr, n))
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return 0;
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}
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@ -259,8 +245,7 @@ static int validate_utf8(unsigned char **s, unsigned int l, struct template_buff
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}
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/* invalid byte (0x00) */
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else
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{
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else {
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if (!buf_putchar(buf, '?')) /* or 0xEF, 0xBF, 0xBD */
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return 0;
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@ -275,11 +260,11 @@ static int validate_utf8(unsigned char **s, unsigned int l, struct template_buff
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/* Sanitize given string and strip all invalid XML bytes
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* Validate UTF-8 sequences
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* Escape XML control chars */
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char * pcdata(const char *s, unsigned int l)
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char * pcdata(const char *s, size_t l, size_t *outl)
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{
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struct template_buffer *buf = buf_init(l);
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unsigned char *ptr = (unsigned char *)s;
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unsigned int o, v;
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const unsigned char *ptr = (const unsigned char *)s;
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size_t o, v;
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char esq[8];
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int esl;
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@ -328,16 +313,17 @@ char * pcdata(const char *s, unsigned int l)
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}
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}
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*outl = buf_length(buf);
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return buf_destroy(buf);
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}
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void luastr_escape(struct template_buffer *out, const char *s, unsigned int l, int escape_xml)
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void luastr_escape(struct template_buffer *out, const char *s, size_t l, bool escape_xml)
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{
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int esl;
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char esq[8];
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char *ptr;
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const char *ptr;
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for (ptr = (char *)s; ptr < (s + l); ptr++)
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for (ptr = s; ptr < (s + l); ptr++)
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{
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switch (*ptr)
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{
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@ -360,8 +346,7 @@ void luastr_escape(struct template_buffer *out, const char *s, unsigned int l, i
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case '&':
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case '<':
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case '>':
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if (escape_xml)
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{
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if (escape_xml) {
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esl = snprintf(esq, sizeof(esq), "&#%i;", *ptr);
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buf_append(out, esq, esl);
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break;
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@ -373,10 +358,10 @@ void luastr_escape(struct template_buffer *out, const char *s, unsigned int l, i
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}
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}
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void luastr_translate(struct template_buffer *out, const char *s, unsigned int l, int escape_xml)
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void luastr_translate(struct template_buffer *out, const char *s, size_t l, bool escape_xml)
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{
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char *tr;
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int trlen;
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size_t trlen;
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if (!lmo_translate(s, l, &tr, &trlen))
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luastr_escape(out, tr, trlen, escape_xml);
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@ -20,33 +20,31 @@
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#ifndef _TEMPLATE_UTILS_H_
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#define _TEMPLATE_UTILS_H_
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdbool.h>
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#include <stddef.h>
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/* buffer object */
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struct template_buffer {
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char *data;
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char *dptr;
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unsigned int size;
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unsigned int fill;
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size_t size;
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};
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struct template_buffer * buf_init(int size);
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int buf_append(struct template_buffer *buf, const char *s, int len);
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struct template_buffer * buf_init(size_t size);
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bool buf_append(struct template_buffer *buf, const char *s, size_t len);
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char * buf_destroy(struct template_buffer *buf);
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/* read buffer length */
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static inline int buf_length(struct template_buffer *buf)
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static inline size_t buf_length(struct template_buffer *buf)
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{
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return buf->fill;
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return buf->dptr - buf->data;
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}
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char * pcdata(const char *s, unsigned int l);
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char * pcdata(const char *s, size_t l, size_t *outl);
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void luastr_escape(struct template_buffer *out, const char *s, unsigned int l, int escape_xml);
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void luastr_translate(struct template_buffer *out, const char *s, unsigned int l, int escape_xml);
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void luastr_escape(struct template_buffer *out, const char *s, size_t l, bool escape_xml);
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void luastr_translate(struct template_buffer *out, const char *s, size_t l, bool escape_xml);
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#endif
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