char *DEH_ReadLine(deh_context_t *context)
{
int c;
int pos;
for (pos = 0;;)
{
c = DEH_GetChar(context);
if (c < 0)
{
// end of file
return NULL;
}
// cope with lines of any length: increase the buffer size
if (pos >= context->readbuffer_size)
{
IncreaseReadBuffer(context);
}
if (c == '\n')
{
// end of line: a full line has been read
context->readbuffer[pos] = '\0';
break;
}
else if (c != '\0')
{
// normal character; don't allow NUL characters to be
// added.
context->readbuffer[pos] = (char) c;
++pos;
}
}
return context->readbuffer;
}
static void *DEH_TextStart(deh_context_t *context, char *line)
{
char *repl_text;
char *orig_text;
int orig_offset, repl_len;
int i;
if (sscanf(line, "Text %i %i", &orig_offset, &repl_len) != 2)
{
DEH_Warning(context, "Parse error on section start");
return NULL;
}
repl_text = malloc(repl_len + 1);
// read in the "to" text
for (i=0; i<repl_len; ++i)
{
int c;
c = DEH_GetChar(context);
repl_text[i] = c;
}
repl_text[repl_len] = '\0';
// We don't support all strings, but at least recognise them:
if (StringIsUnsupported(orig_offset))
{
DEH_Warning(context, "Unsupported string replacement: %i", orig_offset);
}
// Find the string to replace:
else if (!GetStringByOffset(orig_offset, &orig_text))
{
SuggestOtherVersions(orig_offset);
DEH_Error(context, "Unknown string offset: %i", orig_offset);
}
// Only allow string replacements that are possible in Vanilla Doom.
// Chocolate Doom is unforgiving!
else if (!deh_allow_long_strings
&& repl_len > MaxStringLength(strlen(orig_text)))
{
DEH_Error(context, "Replacement string is longer than the maximum "
"possible in heretic.exe");
}
else
{
// Success.
DEH_AddStringReplacement(orig_text, repl_text);
}
// We must always free the replacement text.
free(repl_text);
return NULL;
}
char *DEH_ReadLine(deh_context_t *context, boolean extended)
{
int c;
int pos;
boolean escaped = false;
for (pos = 0;;)
{
c = DEH_GetChar(context);
if (c < 0 && pos == 0)
{
// end of file
return NULL;
}
// cope with lines of any length: increase the buffer size
if (pos >= context->readbuffer_size)
{
IncreaseReadBuffer(context);
}
// extended string support
if (extended && c == '\\')
{
c = DEH_GetChar(context);
// "\n" in the middle of a string indicates an internal linefeed
if (c == 'n')
{
context->readbuffer[pos] = '\n';
++pos;
continue;
}
// values to be assigned may be split onto multiple lines by ending
// each line that is to be continued with a backslash
if (c == '\n')
{
escaped = true;
continue;
}
}
// blanks before the backslash are included in the string
// but indentation after the linefeed is not
if (escaped && c >= 0 && isspace(c) && c != '\n')
{
continue;
}
else
{
escaped = false;
}
if (c == '\n' || c < 0)
{
// end of line: a full line has been read
context->readbuffer[pos] = '\0';
break;
}
else if (c != '\0')
{
// normal character; don't allow NUL characters to be
// added.
context->readbuffer[pos] = (char) c;
++pos;
}
}
return context->readbuffer;
}
