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// Copyright 2014 BitPay Inc.
// Distributed under the MIT software license, see the accompanying
// file COPYING or https://opensource.org/licenses/mit-license.php.
//
// To re-create univalue_escapes.h:
// $ g++ -o gen gen.cpp
// $ ./gen > univalue_escapes.h
//
#include <univalue.h>
#include <cstdio>
#include <cstring>
#include <string>
static bool initEscapes;
static std::string escapes[256];
static void initJsonEscape()
{
// Escape all lower control characters (some get overridden with smaller sequences below)
for (int ch=0x00; ch<0x20; ++ch) {
char tmpbuf[20];
snprintf(tmpbuf, sizeof(tmpbuf), "\\u%04x", ch);
escapes[ch] = std::string(tmpbuf);
}
escapes[(int)'"'] = "\\\"";
escapes[(int)'\\'] = "\\\\";
escapes[(int)'\b'] = "\\b";
escapes[(int)'\f'] = "\\f";
escapes[(int)'\n'] = "\\n";
escapes[(int)'\r'] = "\\r";
escapes[(int)'\t'] = "\\t";
escapes[(int)'\x7f'] = "\\u007f"; // U+007F DELETE
initEscapes = true;
}
static void outputEscape()
{
printf( "// Automatically generated file. Do not modify.\n"
"#ifndef BITCOIN_UNIVALUE_UNIVALUE_ESCAPES_H\n"
"#define BITCOIN_UNIVALUE_UNIVALUE_ESCAPES_H\n"
"static const char *escapes[256] = {\n");
for (unsigned int i = 0; i < 256; i++) {
if (escapes[i].empty()) {
printf("\tnullptr,\n");
} else {
printf("\t\"");
unsigned int si;
for (si = 0; si < escapes[i].size(); si++) {
char ch = escapes[i][si];
switch (ch) {
case '"':
printf("\\\"");
break;
case '\\':
printf("\\\\");
break;
default:
printf("%c", escapes[i][si]);
break;
}
}
printf("\",\n");
}
}
printf( "};\n"
"#endif // BITCOIN_UNIVALUE_UNIVALUE_ESCAPES_H\n");
}
int main (int argc, char *argv[])
{
initJsonEscape();
outputEscape();
return 0;
}
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