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-rw-r--r--src/common/utf8.cpp459
1 files changed, 0 insertions, 459 deletions
diff --git a/src/common/utf8.cpp b/src/common/utf8.cpp
deleted file mode 100644
index 56609634c..000000000
--- a/src/common/utf8.cpp
+++ /dev/null
@@ -1,459 +0,0 @@
-/*
- Basic UTF-8 manipulation routines
- by Jeff Bezanson
- placed in the public domain Fall 2005
-
- This code is designed to provide the utilities you need to manipulate
- UTF-8 as an internal string encoding. These functions do not perform the
- error checking normally needed when handling UTF-8 data, so if you happen
- to be from the Unicode Consortium you will want to flay me alive.
- I do this because error checking can be performed at the boundaries (I/O),
- with these routines reserved for higher performance on data known to be
- valid.
-*/
-
-#ifdef _WIN32
-#include <windows.h>
-#undef min
-#undef max
-#endif
-
-#include <cstdlib>
-#include <cstring>
-#include <algorithm>
-
-#include "common/common_types.h"
-#include "common/utf8.h"
-
-// is start of UTF sequence
-inline bool isutf(char c) {
- return (c & 0xC0) != 0x80;
-}
-
-static const u32 offsetsFromUTF8[6] = {
- 0x00000000UL, 0x00003080UL, 0x000E2080UL,
- 0x03C82080UL, 0xFA082080UL, 0x82082080UL
-};
-
-static const u8 trailingBytesForUTF8[256] = {
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0, 0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,
- 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1, 1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,1,
- 2,2,2,2,2,2,2,2,2,2,2,2,2,2,2,2, 3,3,3,3,3,3,3,3,4,4,4,4,5,5,5,5,
-};
-
-/* returns length of next utf-8 sequence */
-int u8_seqlen(const char *s)
-{
- return trailingBytesForUTF8[(unsigned int)(unsigned char)s[0]] + 1;
-}
-
-/* conversions without error checking
- only works for valid UTF-8, i.e. no 5- or 6-byte sequences
- srcsz = source size in bytes, or -1 if 0-terminated
- sz = dest size in # of wide characters
-
- returns # characters converted
- dest will always be L'\0'-terminated, even if there isn't enough room
- for all the characters.
- if sz = srcsz+1 (i.e. 4*srcsz+4 bytes), there will always be enough space.
-*/
-int u8_toucs(u32 *dest, int sz, const char *src, int srcsz)
-{
- u32 ch;
- const char *src_end = src + srcsz;
- int nb;
- int i=0;
-
- while (i < sz-1) {
- nb = trailingBytesForUTF8[(unsigned char)*src];
- if (srcsz == -1) {
- if (*src == 0)
- goto done_toucs;
- }
- else {
- if (src + nb >= src_end)
- goto done_toucs;
- }
- ch = 0;
- switch (nb) {
- /* these fall through deliberately */
- case 3: ch += (unsigned char)*src++; ch <<= 6;
- case 2: ch += (unsigned char)*src++; ch <<= 6;
- case 1: ch += (unsigned char)*src++; ch <<= 6;
- case 0: ch += (unsigned char)*src++;
- }
- ch -= offsetsFromUTF8[nb];
- dest[i++] = ch;
- }
- done_toucs:
- dest[i] = 0;
- return i;
-}
-
-/* srcsz = number of source characters, or -1 if 0-terminated
- sz = size of dest buffer in bytes
-
- returns # characters converted
- dest will only be '\0'-terminated if there is enough space. this is
- for consistency; imagine there are 2 bytes of space left, but the next
- character requires 3 bytes. in this case we could NUL-terminate, but in
- general we can't when there's insufficient space. therefore this function
- only NUL-terminates if all the characters fit, and there's space for
- the NUL as well.
- the destination string will never be bigger than the source string.
-*/
-int u8_toutf8(char *dest, int sz, u32 *src, int srcsz)
-{
- u32 ch;
- int i = 0;
- char *dest_end = dest + sz;
-
- while (srcsz<0 ? src[i]!=0 : i < srcsz) {
- ch = src[i];
- if (ch < 0x80) {
- if (dest >= dest_end)
- return i;
- *dest++ = (char)ch;
- }
- else if (ch < 0x800) {
- if (dest >= dest_end-1)
- return i;
- *dest++ = (ch>>6) | 0xC0;
- *dest++ = (ch & 0x3F) | 0x80;
- }
- else if (ch < 0x10000) {
- if (dest >= dest_end-2)
- return i;
- *dest++ = (ch>>12) | 0xE0;
- *dest++ = ((ch>>6) & 0x3F) | 0x80;
- *dest++ = (ch & 0x3F) | 0x80;
- }
- else if (ch < 0x110000) {
- if (dest >= dest_end-3)
- return i;
- *dest++ = (ch>>18) | 0xF0;
- *dest++ = ((ch>>12) & 0x3F) | 0x80;
- *dest++ = ((ch>>6) & 0x3F) | 0x80;
- *dest++ = (ch & 0x3F) | 0x80;
- }
- i++;
- }
- if (dest < dest_end)
- *dest = '\0';
- return i;
-}
-
-int u8_wc_toutf8(char *dest, u32 ch)
-{
- if (ch < 0x80) {
- dest[0] = (char)ch;
- return 1;
- }
- if (ch < 0x800) {
- dest[0] = (ch>>6) | 0xC0;
- dest[1] = (ch & 0x3F) | 0x80;
- return 2;
- }
- if (ch < 0x10000) {
- dest[0] = (ch>>12) | 0xE0;
- dest[1] = ((ch>>6) & 0x3F) | 0x80;
- dest[2] = (ch & 0x3F) | 0x80;
- return 3;
- }
- if (ch < 0x110000) {
- dest[0] = (ch>>18) | 0xF0;
- dest[1] = ((ch>>12) & 0x3F) | 0x80;
- dest[2] = ((ch>>6) & 0x3F) | 0x80;
- dest[3] = (ch & 0x3F) | 0x80;
- return 4;
- }
- return 0;
-}
-
-/* charnum => byte offset */
-int u8_offset(const char *str, int charnum)
-{
- int offs=0;
-
- while (charnum > 0 && str[offs]) {
- (void)(isutf(str[++offs]) || isutf(str[++offs]) ||
- isutf(str[++offs]) || ++offs);
- charnum--;
- }
- return offs;
-}
-
-/* byte offset => charnum */
-int u8_charnum(const char *s, int offset)
-{
- int charnum = 0, offs=0;
-
- while (offs < offset && s[offs]) {
- (void)(isutf(s[++offs]) || isutf(s[++offs]) ||
- isutf(s[++offs]) || ++offs);
- charnum++;
- }
- return charnum;
-}
-
-/* number of characters */
-int u8_strlen(const char *s)
-{
- int count = 0;
- int i = 0;
-
- while (u8_nextchar(s, &i) != 0)
- count++;
-
- return count;
-}
-
-/* reads the next utf-8 sequence out of a string, updating an index */
-u32 u8_nextchar(const char *s, int *i)
-{
- u32 ch = 0;
- int sz = 0;
-
- do {
- ch <<= 6;
- ch += (unsigned char)s[(*i)++];
- sz++;
- } while (s[*i] && !isutf(s[*i]));
- ch -= offsetsFromUTF8[sz-1];
-
- return ch;
-}
-
-void u8_inc(const char *s, int *i)
-{
- (void)(isutf(s[++(*i)]) || isutf(s[++(*i)]) ||
- isutf(s[++(*i)]) || ++(*i));
-}
-
-void u8_dec(const char *s, int *i)
-{
- (void)(isutf(s[--(*i)]) || isutf(s[--(*i)]) ||
- isutf(s[--(*i)]) || --(*i));
-}
-
-int octal_digit(char c)
-{
- return (c >= '0' && c <= '7');
-}
-
-int hex_digit(char c)
-{
- return ((c >= '0' && c <= '9') ||
- (c >= 'A' && c <= 'F') ||
- (c >= 'a' && c <= 'f'));
-}
-
-/* assumes that src points to the character after a backslash
- returns number of input characters processed */
-int u8_read_escape_sequence(const char *str, u32 *dest)
-{
- u32 ch;
- char digs[9]="\0\0\0\0\0\0\0\0";
- int dno=0, i=1;
-
- ch = (u32)str[0]; /* take literal character */
- if (str[0] == 'n')
- ch = L'\n';
- else if (str[0] == 't')
- ch = L'\t';
- else if (str[0] == 'r')
- ch = L'\r';
- else if (str[0] == 'b')
- ch = L'\b';
- else if (str[0] == 'f')
- ch = L'\f';
- else if (str[0] == 'v')
- ch = L'\v';
- else if (str[0] == 'a')
- ch = L'\a';
- else if (octal_digit(str[0])) {
- i = 0;
- do {
- digs[dno++] = str[i++];
- } while (octal_digit(str[i]) && dno < 3);
- ch = strtol(digs, nullptr, 8);
- }
- else if (str[0] == 'x') {
- while (hex_digit(str[i]) && dno < 2) {
- digs[dno++] = str[i++];
- }
- if (dno > 0)
- ch = strtol(digs, nullptr, 16);
- }
- else if (str[0] == 'u') {
- while (hex_digit(str[i]) && dno < 4) {
- digs[dno++] = str[i++];
- }
- if (dno > 0)
- ch = strtol(digs, nullptr, 16);
- }
- else if (str[0] == 'U') {
- while (hex_digit(str[i]) && dno < 8) {
- digs[dno++] = str[i++];
- }
- if (dno > 0)
- ch = strtol(digs, nullptr, 16);
- }
- *dest = ch;
-
- return i;
-}
-
-/* convert a string with literal \uxxxx or \Uxxxxxxxx characters to UTF-8
- example: u8_unescape(mybuf, 256, "hello\\u220e")
- note the double backslash is needed if called on a C string literal */
-int u8_unescape(char *buf, int sz, char *src)
-{
- int c=0, amt;
- u32 ch;
- char temp[4];
-
- while (*src && c < sz) {
- if (*src == '\\') {
- src++;
- amt = u8_read_escape_sequence(src, &ch);
- }
- else {
- ch = (u32)*src;
- amt = 1;
- }
- src += amt;
- amt = u8_wc_toutf8(temp, ch);
- if (amt > sz-c)
- break;
- memcpy(&buf[c], temp, amt);
- c += amt;
- }
- if (c < sz)
- buf[c] = '\0';
- return c;
-}
-
-const char *u8_strchr(const char *s, u32 ch, int *charn)
-{
- int i = 0, lasti=0;
- u32 c;
-
- *charn = 0;
- while (s[i]) {
- c = u8_nextchar(s, &i);
- if (c == ch) {
- return &s[lasti];
- }
- lasti = i;
- (*charn)++;
- }
- return nullptr;
-}
-
-const char *u8_memchr(const char *s, u32 ch, size_t sz, int *charn)
-{
- u32 i = 0, lasti=0;
- u32 c;
- int csz;
-
- *charn = 0;
- while (i < sz) {
- c = csz = 0;
- do {
- c <<= 6;
- c += (unsigned char)s[i++];
- csz++;
- } while (i < sz && !isutf(s[i]));
- c -= offsetsFromUTF8[csz-1];
-
- if (c == ch) {
- return &s[lasti];
- }
- lasti = i;
- (*charn)++;
- }
- return nullptr;
-}
-
-int u8_is_locale_utf8(const char *locale)
-{
- /* this code based on libutf8 */
- const char* cp = locale;
-
- for (; *cp != '\0' && *cp != '@' && *cp != '+' && *cp != ','; cp++) {
- if (*cp == '.') {
- const char* encoding = ++cp;
- for (; *cp != '\0' && *cp != '@' && *cp != '+' && *cp != ','; cp++)
- ;
- if ((cp-encoding == 5 && !strncmp(encoding, "UTF-8", 5))
- || (cp-encoding == 4 && !strncmp(encoding, "utf8", 4)))
- return 1; /* it's UTF-8 */
- break;
- }
- }
- return 0;
-}
-
-int UTF8StringNonASCIICount(const char *utf8string) {
- UTF8 utf(utf8string);
- int count = 0;
- while (!utf.end()) {
- int c = utf.next();
- if (c > 127)
- ++count;
- }
- return count;
-}
-
-bool UTF8StringHasNonASCII(const char *utf8string) {
- return UTF8StringNonASCIICount(utf8string) > 0;
-}
-
-#ifdef _WIN32
-
-std::string ConvertWStringToUTF8(const wchar_t *wstr) {
- int len = (int)wcslen(wstr);
- int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr, len, 0, 0, nullptr, nullptr);
- std::string s;
- s.resize(size);
- if (size > 0) {
- WideCharToMultiByte(CP_UTF8, 0, wstr, len, &s[0], size, nullptr, nullptr);
- }
- return s;
-}
-
-std::string ConvertWStringToUTF8(const std::wstring &wstr) {
- int len = (int)wstr.size();
- int size = (int)WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, 0, 0, nullptr, nullptr);
- std::string s;
- s.resize(size);
- if (size > 0) {
- WideCharToMultiByte(CP_UTF8, 0, wstr.c_str(), len, &s[0], size, nullptr, nullptr);
- }
- return s;
-}
-
-void ConvertUTF8ToWString(wchar_t *dest, size_t destSize, const std::string &source) {
- int len = (int)source.size();
- int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, nullptr, 0);
- MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, dest, std::min((int)destSize, size));
-}
-
-std::wstring ConvertUTF8ToWString(const std::string &source) {
- int len = (int)source.size();
- int size = (int)MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, nullptr, 0);
- std::wstring str;
- str.resize(size);
- if (size > 0) {
- MultiByteToWideChar(CP_UTF8, 0, source.c_str(), len, &str[0], size);
- }
- return str;
-}
-
-#endif
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