405 lines
9.3 KiB
C++
405 lines
9.3 KiB
C++
// © 2016 and later: Unicode, Inc. and others.
|
|
// License & terms of use: http://www.unicode.org/copyright.html
|
|
|
|
#include <stdio.h>
|
|
#include <string>
|
|
#include <stdlib.h>
|
|
#include <unistd.h>
|
|
#include <errno.h>
|
|
#include <string.h>
|
|
#include <iostream>
|
|
#include <fstream>
|
|
|
|
// with caution:
|
|
#include "unicode/utf8.h"
|
|
|
|
static const char
|
|
kSPACE = 0x20,
|
|
kTAB = 0x09,
|
|
kLF = 0x0A,
|
|
kCR = 0x0D;
|
|
// kHASH = 0x23,
|
|
// kSLASH = 0x2f,
|
|
// kSTAR = 0x2A,
|
|
|
|
# include "cptbl.h"
|
|
|
|
# define cp1047_to_8859(c) cp1047_8859_1[c]
|
|
|
|
std::string prog;
|
|
|
|
void usage() {
|
|
fprintf(stderr, "%s: usage: %s infile.cpp outfile.cpp\n", prog.c_str(), prog.c_str());
|
|
}
|
|
|
|
|
|
int cleanup(const std::string &outfile) {
|
|
const char *outstr = outfile.c_str();
|
|
if(outstr && *outstr) {
|
|
int rc = unlink(outstr);
|
|
if(rc == 0) {
|
|
fprintf(stderr, "%s: deleted %s\n", prog.c_str(), outstr);
|
|
return 0;
|
|
} else {
|
|
if( errno == ENOENT ) {
|
|
return 0; // File did not exist - no error.
|
|
} else {
|
|
perror("unlink");
|
|
return 1;
|
|
}
|
|
}
|
|
}
|
|
return 0;
|
|
}
|
|
|
|
// inline bool hasNonAscii(const char *line, size_t len) {
|
|
// const unsigned char *uline = reinterpret_cast<const unsigned char*>(line);
|
|
// for(size_t i=0;i<len; i++) {
|
|
// if( uline[i] > 0x7F) {
|
|
// return true;
|
|
// }
|
|
// }
|
|
// return false;
|
|
// }
|
|
|
|
inline const char *skipws(const char *p, const char *e) {
|
|
for(;p<e;p++) {
|
|
switch(*p) {
|
|
case kSPACE:
|
|
case kTAB:
|
|
case kLF:
|
|
case kCR:
|
|
break;
|
|
default:
|
|
return p; // non ws
|
|
}
|
|
}
|
|
return p;
|
|
}
|
|
|
|
// inline bool isCommentOrEmpty(const char* line, size_t len) {
|
|
// const char *p = line;
|
|
// const char *e = line+len;
|
|
// p = skipws(p,e);
|
|
// if(p==e) {
|
|
// return true; // whitespace only
|
|
// }
|
|
// p++;
|
|
// switch(*p) {
|
|
// case kHASH: return true; // #directive
|
|
// case kSLASH:
|
|
// p++;
|
|
// if(p==e) return false; // single slash
|
|
// switch(*p) {
|
|
// case kSLASH: // '/ /'
|
|
// case kSTAR: // '/ *'
|
|
// return true; // start of comment
|
|
// default: return false; // something else
|
|
// }
|
|
// default: return false; // something else
|
|
// }
|
|
// /*NOTREACHED*/
|
|
// }
|
|
|
|
void appendByte(std::string &outstr,
|
|
uint8_t byte) {
|
|
char tmp2[5];
|
|
sprintf(tmp2, "\\x%02X", 0xFF & (int)(byte));
|
|
outstr += tmp2;
|
|
}
|
|
|
|
/**
|
|
* @return true on failure
|
|
*/
|
|
bool appendUtf8(std::string &outstr,
|
|
const std::string &linestr,
|
|
size_t &pos,
|
|
size_t chars) {
|
|
char tmp[9];
|
|
for(size_t i=0;i<chars;i++) {
|
|
tmp[i] = linestr[++pos];
|
|
}
|
|
tmp[chars] = 0;
|
|
unsigned int c;
|
|
sscanf(tmp, "%X", &c);
|
|
UChar32 ch = c & 0x1FFFFF;
|
|
|
|
// now to append \\x%% etc
|
|
uint8_t bytesNeeded = U8_LENGTH(ch);
|
|
if(bytesNeeded == 0) {
|
|
fprintf(stderr, "Illegal code point U+%X\n", ch);
|
|
return true;
|
|
}
|
|
uint8_t bytes[4];
|
|
uint8_t *s = bytes;
|
|
size_t i = 0;
|
|
U8_APPEND_UNSAFE(s, i, ch);
|
|
for(size_t t = 0; t<i; t++) {
|
|
appendByte(outstr, s[t]);
|
|
}
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* @param linestr string to mutate. Already escaped into \u format.
|
|
* @param origpos beginning, points to 'u8"'
|
|
* @param pos end, points to "
|
|
* @return false for no-problem, true for failure!
|
|
*/
|
|
bool fixu8(std::string &linestr, size_t origpos, size_t &endpos) {
|
|
size_t pos = origpos + 3;
|
|
std::string outstr;
|
|
outstr += '\"'; // local encoding
|
|
for(;pos<endpos;pos++) {
|
|
char c = linestr[pos];
|
|
if(c == '\\') {
|
|
char c2 = linestr[++pos];
|
|
switch(c2) {
|
|
case '\'':
|
|
case '"':
|
|
#if (U_CHARSET_FAMILY == U_EBCDIC_FAMILY)
|
|
c2 = cp1047_to_8859(c2);
|
|
#endif
|
|
appendByte(outstr, c2);
|
|
break;
|
|
case 'u':
|
|
appendUtf8(outstr, linestr, pos, 4);
|
|
break;
|
|
case 'U':
|
|
appendUtf8(outstr, linestr, pos, 8);
|
|
break;
|
|
}
|
|
} else {
|
|
#if (U_CHARSET_FAMILY == U_EBCDIC_FAMILY)
|
|
c = cp1047_to_8859(c);
|
|
#endif
|
|
appendByte(outstr, c);
|
|
}
|
|
}
|
|
outstr += ('\"');
|
|
|
|
linestr.replace(origpos, (endpos-origpos+1), outstr);
|
|
|
|
return false; // OK
|
|
}
|
|
|
|
/**
|
|
* fix the string at the position
|
|
* false = no err
|
|
* true = had err
|
|
*/
|
|
bool fixAt(std::string &linestr, size_t pos) {
|
|
size_t origpos = pos;
|
|
|
|
if(linestr[pos] != 'u') {
|
|
fprintf(stderr, "Not a 'u'?");
|
|
return true;
|
|
}
|
|
|
|
pos++; // past 'u'
|
|
|
|
bool utf8 = false;
|
|
|
|
if(linestr[pos] == '8') { // u8"
|
|
utf8 = true;
|
|
pos++;
|
|
}
|
|
|
|
char quote = linestr[pos];
|
|
|
|
if(quote != '\'' && quote != '\"') {
|
|
fprintf(stderr, "Quote is '%c' - not sure what to do.\n", quote);
|
|
return true;
|
|
}
|
|
|
|
if(quote == '\'' && utf8) {
|
|
fprintf(stderr, "Cannot do u8'...'\n");
|
|
return true;
|
|
}
|
|
|
|
pos ++;
|
|
|
|
//printf("u%c…%c\n", quote, quote);
|
|
|
|
for(; pos < linestr.size(); pos++) {
|
|
if(linestr[pos] == quote) {
|
|
if(utf8) {
|
|
return fixu8(linestr, origpos, pos); // fix u8"..."
|
|
} else {
|
|
return false; // end of quote
|
|
}
|
|
}
|
|
if(linestr[pos] == '\\') {
|
|
pos++;
|
|
if(linestr[pos] == quote) continue; // quoted quote
|
|
if(linestr[pos] == 'u') continue; // for now ... unicode escape
|
|
if(linestr[pos] == '\\') continue;
|
|
// some other escape… ignore
|
|
} else {
|
|
size_t old_pos = pos;
|
|
int32_t i = pos;
|
|
#if (U_CHARSET_FAMILY == U_EBCDIC_FAMILY)
|
|
// mogrify 1-4 bytes from 1047 'back' to utf-8
|
|
char old_byte = linestr[pos];
|
|
linestr[pos] = cp1047_to_8859(linestr[pos]);
|
|
// how many more?
|
|
int32_t trail = U8_COUNT_TRAIL_BYTES(linestr[pos]);
|
|
for(size_t pos2 = pos+1; trail>0; pos2++,trail--) {
|
|
linestr[pos2] = cp1047_to_8859(linestr[pos2]);
|
|
if(linestr[pos2] == 0x0A) {
|
|
linestr[pos2] = 0x85; // NL is ambiguous here
|
|
}
|
|
}
|
|
#endif
|
|
|
|
// Proceed to decode utf-8
|
|
const uint8_t *s = (const uint8_t*) (linestr.c_str());
|
|
int32_t length = linestr.size();
|
|
UChar32 c;
|
|
if(U8_IS_SINGLE((uint8_t)s[i]) && oldIllegal[s[i]]) {
|
|
#if (U_CHARSET_FAMILY == U_EBCDIC_FAMILY)
|
|
linestr[pos] = old_byte; // put it back
|
|
#endif
|
|
continue; // single code point not previously legal for \u escaping
|
|
}
|
|
|
|
// otherwise, convert it to \u / \U
|
|
{
|
|
U8_NEXT(s, i, length, c);
|
|
}
|
|
if(c<0) {
|
|
fprintf(stderr, "Illegal utf-8 sequence at Column: %d\n", (int)old_pos);
|
|
fprintf(stderr, "Line: >>%s<<\n", linestr.c_str());
|
|
return true;
|
|
}
|
|
|
|
size_t seqLen = (i-pos);
|
|
|
|
//printf("U+%04X pos %d [len %d]\n", c, pos, seqLen);fflush(stdout);
|
|
|
|
char newSeq[20];
|
|
if( c <= 0xFFFF) {
|
|
sprintf(newSeq, "\\u%04X", c);
|
|
} else {
|
|
sprintf(newSeq, "\\U%08X", c);
|
|
}
|
|
linestr.replace(pos, seqLen, newSeq);
|
|
pos += strlen(newSeq) - 1;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
/**
|
|
* false = no err
|
|
* true = had err
|
|
*/
|
|
bool fixLine(int /*no*/, std::string &linestr) {
|
|
const char *line = linestr.c_str();
|
|
size_t len = linestr.size();
|
|
|
|
// no u' in the line?
|
|
if(!strstr(line, "u'") && !strstr(line, "u\"") && !strstr(line, "u8\"")) {
|
|
return false; // Nothing to do. No u' or u" detected
|
|
}
|
|
|
|
// lines such as u8"\u0308" are all ASCII.
|
|
// // Quick Check: all ascii?
|
|
// if(!hasNonAscii(line, len)) {
|
|
// return false; // ASCII
|
|
// }
|
|
|
|
// // comment or empty line?
|
|
// if(isCommentOrEmpty(line, len)) {
|
|
// return false; // Comment or just empty
|
|
// }
|
|
|
|
// start from the end and find all u" cases
|
|
size_t pos = len = linestr.size();
|
|
while((pos>0) && (pos = linestr.rfind("u\"", pos)) != std::string::npos) {
|
|
//printf("found doublequote at %d\n", pos);
|
|
if(fixAt(linestr, pos)) return true;
|
|
if(pos == 0) break;
|
|
pos--;
|
|
}
|
|
|
|
// reset and find all u' cases
|
|
pos = len = linestr.size();
|
|
while((pos>0) && (pos = linestr.rfind("u'", pos)) != std::string::npos) {
|
|
//printf("found singlequote at %d\n", pos);
|
|
if(fixAt(linestr, pos)) return true;
|
|
if(pos == 0) break;
|
|
pos--;
|
|
}
|
|
|
|
// reset and find all u8" cases
|
|
pos = len = linestr.size();
|
|
while((pos>0) && (pos = linestr.rfind("u8\"", pos)) != std::string::npos) {
|
|
if(fixAt(linestr, pos)) return true;
|
|
if(pos == 0) break;
|
|
pos--;
|
|
}
|
|
|
|
//fprintf(stderr, "%d - fixed\n", no);
|
|
return false;
|
|
}
|
|
|
|
int convert(const std::string &infile, const std::string &outfile) {
|
|
fprintf(stderr, "escapesrc: %s -> %s\n", infile.c_str(), outfile.c_str());
|
|
|
|
std::ifstream inf;
|
|
|
|
inf.open(infile.c_str(), std::ios::in);
|
|
|
|
if(!inf.is_open()) {
|
|
fprintf(stderr, "%s: could not open input file %s\n", prog.c_str(), infile.c_str());
|
|
cleanup(outfile);
|
|
return 1;
|
|
}
|
|
|
|
std::ofstream outf;
|
|
|
|
outf.open(outfile.c_str(), std::ios::out);
|
|
|
|
if(!outf.is_open()) {
|
|
fprintf(stderr, "%s: could not open output file %s\n", prog.c_str(), outfile.c_str());
|
|
return 1;
|
|
}
|
|
|
|
// TODO: any platform variations of #line?
|
|
outf << "#line 1 \"" << infile << "\"" << '\n';
|
|
|
|
int no = 0;
|
|
std::string linestr;
|
|
while( getline( inf, linestr)) {
|
|
no++;
|
|
if(fixLine(no, linestr)) {
|
|
outf.close();
|
|
fprintf(stderr, "%s:%d: Fixup failed by %s\n", infile.c_str(), no, prog.c_str());
|
|
cleanup(outfile);
|
|
return 1;
|
|
}
|
|
outf << linestr << '\n';
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
int main(int argc, const char *argv[]) {
|
|
prog = argv[0];
|
|
|
|
if(argc != 3) {
|
|
usage();
|
|
return 1;
|
|
}
|
|
|
|
std::string infile = argv[1];
|
|
std::string outfile = argv[2];
|
|
|
|
return convert(infile, outfile);
|
|
}
|
|
|
|
|
|
#include "utf_impl.cpp"
|