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77 lines
2.2 KiB
C
77 lines
2.2 KiB
C
#ifndef EL_DOM_STRING_H
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#define EL_DOM_STRING_H
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#include "util/memory.h"
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/* For now DOM has it's own little string library. Mostly because there are
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* some memory overhead associated with util/string's block-based allocation
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* scheme which is optimized for building strings and quickly dispose of it.
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* Also, at some point we need to switch to use mainly UTF-8 strings for DOM
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* and it needs to be possible to adapt the string library to that. --jonas */
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struct dom_string {
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unsigned int length;
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unsigned char *string;
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};
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#define INIT_DOM_STRING(strvalue, strlength) \
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{ (strlength), (strvalue) }
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#define STATIC_DOM_STRING(strvalue) \
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{ sizeof(strvalue) - 1, (strvalue) }
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static inline void
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set_dom_string(struct dom_string *string, unsigned char *value, size_t length)
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{
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string->string = value;
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string->length = length == -1 ? strlen(value) : length;
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}
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static inline int
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dom_string_casecmp(const struct dom_string *string1, const struct dom_string *string2)
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{
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size_t length = int_min(string1->length, string2->length);
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size_t string_diff = strncasecmp(string1->string, string2->string, length);
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/* If the lengths or strings don't match strncasecmp() does the
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* job else return which ever is bigger. */
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return string_diff ? string_diff : string1->length - string2->length;
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}
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static inline int
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dom_string_ncasecmp(struct dom_string *string1, struct dom_string *string2, size_t length)
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{
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return strncasecmp(string1->string, string2->string, length);
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}
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#define copy_dom_string(string1, string2) \
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set_dom_string(string1, (string2)->string, (string2)->length)
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static inline struct dom_string *
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add_to_dom_string(struct dom_string *string, unsigned char *str, size_t len)
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{
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unsigned char *newstring;
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newstring = mem_realloc(string->string, string->length + len + 1);
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if (!newstring)
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return NULL;
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string->string = newstring;
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memcpy(string->string + string->length, str, len);
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string->length += len;
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string->string[string->length] = 0;
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return string;
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}
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#define init_dom_string(string, str, len) add_to_dom_string(string, str, len)
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#define is_dom_string_set(str) ((str)->string && (str)->length)
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#define done_dom_string(str) \
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do { mem_free_set(&(str)->string, NULL); (str)->length = 0; } while (0)
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#define isquote(c) ((c) == '"' || (c) == '\'')
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#endif
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