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/*
* Simple string library
* Version 0.2
* 1999 by yoshidam
*/
#include <stdio.h>
#include <stdlib.h>
#include "ustring.h"
UString*
UStr_alloc(UString* str)
{
str->size = USTR_INITIAL_STRING_LEN;
str->len = 0;
if ((str->str = (unsigned char*)malloc(USTR_INITIAL_STRING_LEN)) == NULL) {
str->size = 0;
return NULL;
}
return str;
}
UString*
UStr_enlarge(UString* str, int size)
{
unsigned char* newptr;
if ((newptr = (unsigned char*)realloc(str->str, str->size + size))
== NULL) {
return NULL;
}
str->str = newptr;
str->size += size;
return str;
}
void
UStr_free(UString* str)
{
str->size = 0;
str->len = 0;
free(str->str);
}
int
UStr_addChars(UString* s, const unsigned char* a, int len)
{
if (s->len + len >= s->size) {
UStr_enlarge(s, len + USTR_STRING_EXTEND_LEN);
}
memcpy(s->str + s->len, a, len);
s->len += len;
return s->len;
}
int
UStr_addChar(UString* s, unsigned char a)
{
if (s->len + 1 >= s->size) {
UStr_enlarge(s, USTR_STRING_EXTEND_LEN);
}
*(s->str + s->len) = a;
(s->len)++;
return s->len;
}
int
UStr_addChar2(UString* s, unsigned char a1, unsigned char a2)
{
if (s->len + 2 >= s->size) {
UStr_enlarge(s, USTR_STRING_EXTEND_LEN);
}
*(s->str + s->len) = a1;
*(s->str + s->len + 1) = a2;
s->len += 2;
return s->len;
}
int
UStr_addChar3(UString* s, unsigned char a1, unsigned char a2, unsigned char a3)
{
if (s->len + 3 >= s->size) {
UStr_enlarge(s, USTR_STRING_EXTEND_LEN);
}
*(s->str + s->len) = a1;
*(s->str + s->len + 1) = a2;
*(s->str + s->len + 2) = a3;
s->len += 3;
return s->len;
}
int
UStr_addChar4(UString* s, unsigned char a1, unsigned char a2,
unsigned char a3, unsigned char a4)
{
if (s->len + 4 >= s->size) {
UStr_enlarge(s, USTR_STRING_EXTEND_LEN);
}
*(s->str + s->len) = a1;
*(s->str + s->len + 1) = a2;
*(s->str + s->len + 2) = a3;
*(s->str + s->len + 3) = a4;
s->len += 4;
return s->len;
}
int
UStr_addChar5(UString* s, unsigned char a1, unsigned char a2,
unsigned char a3, unsigned char a4, unsigned char a5)
{
if (s->len + 5 >= s->size) {
UStr_enlarge(s, USTR_STRING_EXTEND_LEN);
}
*(s->str + s->len) = a1;
*(s->str + s->len + 1) = a2;
*(s->str + s->len + 2) = a3;
*(s->str + s->len + 3) = a4;
*(s->str + s->len + 4) = a5;
s->len += 5;
return s->len;
}
int
UStr_addChar6(UString* s, unsigned char a1, unsigned char a2,
unsigned char a3, unsigned char a4,
unsigned char a5, unsigned char a6)
{
if (s->len + 6 >= s->size) {
UStr_enlarge(s, USTR_STRING_EXTEND_LEN);
}
*(s->str + s->len) = a1;
*(s->str + s->len + 1) = a2;
*(s->str + s->len + 2) = a3;
*(s->str + s->len + 3) = a4;
*(s->str + s->len + 4) = a5;
*(s->str + s->len + 5) = a6;
s->len += 6;
return s->len;
}
int
UStr_addWChar(UString* ustr, int c)
{
if (c < 128) { /* 0x0000-0x00FF */
UStr_addChar(ustr, c);
}
else if (c < 2048) { /* 0x0100-0x07FF */
unsigned char b2 = c & 63;
unsigned char b1 = c >> 6;
UStr_addChar2(ustr, b1 | 192, b2 | 128);
}
else if (c < 0x10000) { /* 0x0800-0xFFFF */
unsigned char b3 = c & 63;
unsigned char b2 = (c >> 6) & 63;
unsigned char b1 = c >> 12;
UStr_addChar3(ustr, b1 | 224, b2 | 128, b3 | 128);
}
else if (c < 0x200000) { /* 0x00010000-0x001FFFFF */
unsigned char b4 = c & 63;
unsigned char b3 = (c >> 6) & 63;
unsigned char b2 = (c >> 12) & 63;
unsigned char b1 = c >> 18;
UStr_addChar4(ustr, b1 | 240, b2 | 128, b3 | 128, b4 | 128);
}
else if (c < 0x4000000) { /* 0x00200000-0x03FFFFFF */
unsigned char b5 = c & 63;
unsigned char b4 = (c >> 6) & 63;
unsigned char b3 = (c >> 12) & 63;
unsigned char b2 = (c >> 18) & 63;
unsigned char b1 = c >> 24;
UStr_addChar5(ustr, b1 | 248, b2 | 128, b3 | 128, b4 | 128, b5 | 128);
}
else if (c < 0x80000000) { /* 0x04000000-0x7FFFFFFF */
unsigned char b6 = c & 63;
unsigned char b5 = (c >> 6) & 63;
unsigned char b4 = (c >> 12) & 63;
unsigned char b3 = (c >> 18) & 63;
unsigned char b2 = (c >> 24) & 63;
unsigned char b1 = (c >> 30) & 63;
UStr_addChar6(ustr, b1 | 252, b2 | 128, b3 | 128,
b4 | 128, b5 | 128, b6 | 128);
}
return ustr->len;
}
int
UStr_addWCharToU16LE(UString* ustr, int c)
{
if (c < 0x10000) {
UStr_addChar2(ustr, c & 0xff, c >> 8);
}
else if (c < 0x110000) {
unsigned int high = ((c - 0x10000) >> 10) | 0xd800;
unsigned int low = (c & 1023) | 0xdc00;
UStr_addChar4(ustr, high & 255, high >> 8, low & 255, low >> 8);
}
return ustr->len;
}
int
UStr_addWCharToU32LE(UString* ustr, int c)
{
UStr_addChar4(ustr, c & 0xff, (c >> 8) & 0xff,
(c >>16) & 0xff, c >> 24);
return ustr->len;
}
void
UStr_dump(UString* s)
{
int i;
printf("[%d/%d] ", s->len, s->size);
for (i = 0; i < s->len ; i++) {
printf("%02x ", *(s->str + i));
}
printf("\n");
}
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