117 lines
2.8 KiB
C
117 lines
2.8 KiB
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#define DEFAULT_STRING_SIZE 32
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typedef struct __string {
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char* Characters;
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int Length;
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int ByteCount;
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int Capacity;
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} TString;
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int GetGlyphByteWidth(const char* glyph);
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void AppendGlyph(const char* glyph, TString* string);
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void GetCharByIndex(int index, char characters[8], const TString* string);
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TString* CreateString(void);
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const unsigned char First = 0x70;
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const unsigned char Teo = 0xE0;
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const unsigned char Three = 0xF0;
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const unsigned char Four = 0xF7;
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int main(int argc, char** argv) {
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char glyph[10] = { 0 };
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char characters[8] = { 0 };
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int index = 2;
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TString* string = CreateString();
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//0xF0 0xA0 0xBA 0x8C
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char* test = u8"\xE5\x87\x84";
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char* test2 = u8"\xE3\x81\x84";
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char* test4 = u8"\xF0\xA0\xBA\x8C";
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char* test5 = "B";
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char* test3 = " Just some\0 extra text";
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AppendGlyph(test, string);
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AppendGlyph(test2, string);
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AppendGlyph(test4, string);
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AppendGlyph(test5, string);
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GetCharByIndex(index, characters, string);
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GetCharByIndex(3, glyph, string);
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printf("From string index %d: '%s' (string length is %d)\n", index, characters, string->Length);
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printf("And one English character: '%s'\n", glyph);
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printf("Full string: '%s'\n", string->Characters);
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//fgets(glyph, 10, stdin);
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//glyph[strlen(glyph) - 1] = 0;
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//printf("Width %d byte(s).\n", GetGlyphByteWidth(glyph));
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}
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TString* CreateString(void) {
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TString* string = malloc(sizeof(TString));
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string->Characters = calloc(DEFAULT_STRING_SIZE, sizeof(char));
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string->Capacity = DEFAULT_STRING_SIZE;
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string->ByteCount = 0;
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string->Length = 0;
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return string;
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}
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void AppendGlyph(const char* glyph, TString* string) {
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int length = strlen(glyph);
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memcpy(&string->Characters[string->ByteCount], glyph, length);
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string->ByteCount += length;
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string->Length++;
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}
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void GetCharByIndex(int index, char characters[8], const TString* string) {
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int glyphCount = 0;
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for(int i = 0; i < string->ByteCount;) {
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if (glyphCount == index) {
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memcpy(characters, &string->Characters[i], GetGlyphByteWidth(&string->Characters[i]));
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return;
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}
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glyphCount++;
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i += GetGlyphByteWidth(&string->Characters[i]);
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}
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}
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int GetGlyphByteWidth(const char* glyph) {
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printf("Bytes for '%s': ", glyph);
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for(size_t i = 0; i < strlen(glyph); i++) {
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printf("%02X ", 0xFF & glyph[i]);
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}
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printf("\n");
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unsigned char result = *glyph & 0xFF;
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if ((*glyph & 0x80) == 0) {
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return 1;
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}
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else if ((*glyph & 0xE0) == 0xC0) {
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return 2;
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}
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else if ((*glyph & 0xF0) == 0xE0) {
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return 3;
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}
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else if ((*glyph & 0xF8) == 0xF0) {
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return 4;
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}
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fprintf(stderr, "Failed to get glyph %02X\n", 0xFF & *glyph);
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exit(-1);
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} |