84 lines
2.0 KiB
C
84 lines
2.0 KiB
C
// Copyright 2022-2023 Dietrich Epp.
|
|
// This file is part of SyncFiles. SyncFiles is licensed under the terms of the
|
|
// Mozilla Public License, version 2.0. See LICENSE.txt for details.
|
|
#include "macos/pstrbuilder.h"
|
|
|
|
#include <string.h>
|
|
|
|
void PStrInit(struct PStrBuilder *buf)
|
|
{
|
|
buf->data[0] = 0;
|
|
buf->truncated = 0;
|
|
}
|
|
|
|
static void PStrAppendMem(struct PStrBuilder *buf, const unsigned char *src,
|
|
int slen)
|
|
{
|
|
int dlen;
|
|
|
|
if (slen == 0 || buf->truncated) {
|
|
return;
|
|
}
|
|
dlen = buf->data[0];
|
|
if (slen + dlen > 255) {
|
|
// Too long, truncate.
|
|
// FIXME: Handle other scripts:
|
|
// - Truncation should respect multibyte character boundaries.
|
|
// - Ellipsis should be taken from internationalization table.
|
|
slen = 255 - dlen;
|
|
memcpy(buf->data + 1 + dlen, src, slen);
|
|
dlen += slen;
|
|
if (dlen >= 255) {
|
|
dlen = 254;
|
|
}
|
|
buf->data[1 + dlen] = 0xc9; // 0xc9 is ellipsis.
|
|
dlen++;
|
|
buf->data[0] = dlen;
|
|
buf->truncated = true;
|
|
return;
|
|
}
|
|
memcpy(buf->data + 1 + dlen, src, slen);
|
|
buf->data[0] = dlen + slen;
|
|
}
|
|
|
|
void PStrAppendChar(struct PStrBuilder *buf, unsigned char c)
|
|
{
|
|
PStrAppendMem(buf, &c, 1);
|
|
}
|
|
|
|
void PStrAppend(struct PStrBuilder *buf, const unsigned char *src)
|
|
{
|
|
PStrAppendMem(buf, src + 1, src[0]);
|
|
}
|
|
|
|
void PStrAppendSubstitute(struct PStrBuilder *buf, const unsigned char *src,
|
|
int paramcount, const unsigned char *const *params)
|
|
{
|
|
int srclen, srcpos, start, ch;
|
|
const unsigned char *param;
|
|
|
|
srclen = src[0];
|
|
srcpos = 1;
|
|
start = 1;
|
|
while (srcpos <= srclen) {
|
|
if (src[srcpos] == '^' && srcpos + 1 <= srclen) {
|
|
ch = src[srcpos + 1];
|
|
if ('1' <= ch && ch <= '9') {
|
|
ch -= '1';
|
|
if (ch < paramcount && (param = params[ch]) != NULL) {
|
|
PStrAppendMem(buf, src + start, srcpos - start);
|
|
param = params[ch];
|
|
PStrAppendMem(buf, param + 1, param[0]);
|
|
srcpos += 2;
|
|
start = srcpos;
|
|
} else {
|
|
srcpos += 2;
|
|
}
|
|
continue;
|
|
}
|
|
}
|
|
srcpos++;
|
|
}
|
|
PStrAppendMem(buf, src + start, srcpos - start);
|
|
}
|