浅谈PDFlib中文输出(四)PDFlib 接收的几种文本输入形式
2007-03-15 21:56:05 来源:WEB开发网核心提示: PDF_set_parameter(p, "charref", "true");PDF_set_parameter(p, "textformat", "bytes");下面给出一些有效的Character Re
PDF_set_parameter(p, "charref", "true");
PDF_set_parameter(p, "textformat", "bytes");
下面给出一些有效的Character Reference: soft hyphen
soft hyphen
soft hyphen
€ Euro glyph (hexadecimal)
€ Euro glyph (decimal)
€ Euro glyph (entity name)
< less than sign
> greater than sign
& ampersand sign
Α Greek Alpha
下面是一个相关的例子--C 源程序(附上生成的pdf文件 –PDFlib_cs4.pdf)。
/*******************************************************************/
/* This example demostrates output Chinese Simplified text with different
/* ''textformat'' option under Chinese Simplifed Windows.
/*******************************************************************/
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include "pdflib.h"
int main(void)
{
PDF *p = NULL;
int Font_E = 0, Font_H = 0, Font_CS = 0, Left = 50, y = 800, i = 0;
const int INCRY = 25;
char text[128], buf[128];
/* 1 byte text (English: "Simplified Chinese") */
static const char byte_text[] =
"12315115516015415114615114514440103150151156145163145";
static const int byte_len = 18;
static const char byte2_text[] = {0x53,0x69,0x6D,0x70,0x6C,0x69,0x66,0x69,0x65,
0x64,0x20,0x43,0x68,0x69,0x6E,0x65,0x73,0x65};
static const int byte2_len = 18;
/* 2 byte text (Simplified Chinese) */
static const unsigned short utf16_text[] = {0x7B80,0x4F53,0x4E2D,0x6587};
static const int utf16_len = 8;
static const unsigned char utf16be_text[] ="17320011712311655145207";
static const int utf16be_len = 8;
static const unsigned char utf16be_bom_text[] = "37637717320011712311655145207";
static const int utf16be_bom_len = 10;
static const unsigned char utf16le_text[] ="20017312311755116207145";
static const int utf16le_len = 8;
static const unsigned char utf16le_bom_text[] = "37737620017312311755116207145";
static const int utf16le_bom_len = 10;
static const unsigned char utf8_text[] = "347256200344275223344270255346226207";
static const int utf8_len = 12;
static const unsigned char utf8_bom_text[] = "xEFxBBxBFxE7xAEx80xE4xBDx93xE4xB8xADxE6x96x87";
static const int utf8_bom_len = 15;
static const char htmlutf16_text[] = "简体中文";
static const int htmlutf16_len = sizeof(htmlutf16_text) - 1;
typedef struct
{
char *textformat;
char *encname;
const char *textstring;
const int *textlength;
const char *bomkind;
} TestCase;
static const TestCase table_8[] = {
{ "bytes", "winansi", (const char *)byte_text, &byte_len, ""},
{ "auto", "winansi", (const char *)byte_text, &byte_len, ""},
{ "bytes", "winansi", (const char *)byte2_text, &byte2_len, ""}, };
static const TestCase table_16[] = {
{ "auto", "unicode", (const char *)utf16_text, &utf16_len, ""},
{ "utf16", "unicode", (const char *)utf16_text, &utf16_len, ""},
{ "auto", "unicode", (const char *)utf16be_bom_text, &utf16be_bom_len, ", UTF-16+BE-BOM"},
{ "auto", "unicode", (const char *)utf16le_bom_text, &utf16le_bom_len, ", UTF-16+LE-BOM"},
{ "utf16be", "unicode", (const char *)utf16be_text, &utf16be_len, ""},
{ "utf16le", "unicode", (const char *)utf16le_text, &utf16le_len, ""},
{ "utf8", "unicode", (const char *)utf8_text, &utf8_len, ""},
{ "auto", "unicode", (const char *)utf8_bom_text, &utf8_bom_len, ", UTF-8+BOM"},
{ "bytes", "unicode", (const char *)htmlutf16_text, &htmlutf16_len, ", HTML unicode character"}, };
const int tsize_8 = sizeof table_8 / sizeof (TestCase);
const int tsize_16 = sizeof table_16 / sizeof (TestCase);
/* create a new PDFlib object */
if ((p = PDF_new()) == (PDF *) 0)
{
printf("Couldn''t create PDFlib object (out of memory)!
");
return(2);
}
PDF_TRY(p) {
if (PDF_begin_document(p, "pdflib_cs4.pdf", 0, "") == -1)
{
printf("Error: %s
", PDF_get_errmsg(p));
return(2);
}
PDF_set_info(p, "Creator", "pdflib_cs4.c");
PDF_set_info(p, "Author", "myi@pdflib.com");
PDF_set_info(p, "Title", "Output Chinese Simplify with Different textformat");
/* Start a new page. */
PDF_begin_page_ext(p, a4_width, a4_height, "");
Font_H = PDF_load_font(p, "Helvetica-Bold", 0, "winansi", "");
/* 8-bit encoding */
Font_E = PDF_load_font(p, "Times", 0, "winansi", "");
PDF_setfont(p, Font_H, 24);
PDF_show_xy(p, "8-bit encoding", Left+40, y);
y -= 2*INCRY;
for (i = 0; i < tsize_8; ++i)
{
PDF_setfont(p, Font_H, 14);
sprintf(text, "%s encoding, %s textformat %s: ", table_8[i].encname,
table_8[i].textformat, table_8[i].bomkind);
PDF_show_xy(p, text, Left, y);
y -= INCRY;
PDF_set_parameter(p, "textformat", table_8[i].textformat);
PDF_setfont(p, Font_E, 14);
PDF_show_xy(p, table_8[i].textstring, Left, y);
y -= INCRY;
} /* for */
/* 16-bit encoding */
PDF_setfont(p, Font_H, 24);
y -= 2*INCRY;
PDF_show_xy(p, "16-bit encoding", Left+40, y);
y -= 2*INCRY;
PDF_set_parameter(p, "charref", "true");
Font_CS = PDF_load_font(p, "STSong-Light", 0, "UniGB-UCS2-H", "");
for (i = 0; i < tsize_16; i++)
{
PDF_setfont(p, Font_H, 14);
sprintf(text, "%s encoding, %s textformat %s: ", table_16[i].encname,
table_16[i].textformat, table_16[i].bomkind);
PDF_show_xy(p, text, Left, y);
y -= INCRY;
PDF_setfont(p, Font_CS, 14);
sprintf(buf, "textformat %s",table_16[i].textformat);
PDF_fit_textline(p, table_16[i].textstring, *table_16[i].textlength,
Left, y, buf);
y -= INCRY;
} /* for */
/* End of page. */
PDF_end_page_ext(p, "");
PDF_end_document(p, "");
}
PDF_CATCH(p) {
printf("PDFlib exception occurred in pdflib_cs4 sample:
");
printf("[%d] %s: %s
",
PDF_get_errnum(p), PDF_get_apiname(p), PDF_get_errmsg(p));
PDF_delete(p);
return(2);
}
PDF_delete(p);
return 0;
}
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