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1619 lines (1285 loc) · 42.5 KB
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/*
* Copyright (C) Volition, Inc. 1999. All rights reserved.
*
* All source code herein is the property of Volition, Inc. You may not sell
* or otherwise commercially exploit the source or things you created based on the
* source.
*
*/
#include <ctype.h>
#include "cfile/cfile.h"
#include "localization/localize.h"
#include "osapi/osregistry.h"
#include "parse/encrypt.h"
#include "parse/parselo.h"
#include "playerman/player.h"
// ------------------------------------------------------------------------------------------------------------
// LOCALIZE DEFINES/VARS
//
// general language/localization data ---------------------
// current language
int Lcl_current_lang = FS2_OPEN_DEFAULT_LANGUAGE;
SCP_vector<lang_info> Lcl_languages;
// These are the original languages supported by FS2. The code expects these languages to be supported even if the tables don't
lang_info Lcl_builtin_languages[NUM_BUILTIN_LANGUAGES] = {
{ "English", "", {127,0,176,0,0}, 589986744}, // English
{ "German", "gr", {164,0,176,0,0}, -1132430286 }, // German
{ "French", "fr", {164,0,176,0,0}, 0 }, // French
{ "Polish", "pl", {127,0,176,0,0}, -1131728960}, // Polish
};
int Lcl_special_chars;
// use these to replace *_BUILD, values before
// only 1 will be active at a time
int Lcl_fr = 0;
int Lcl_gr = 0;
int Lcl_pl = 0;
int Lcl_english = 1;
// executable string localization data --------------------
// XSTR_SIZE is the total count of unique XSTR index numbers. An index is used to
// reference an entry in strings.tbl. This is used for translation of strings from
// the english version (in the code) to a foreign version (in the table). Thus, if you
// add a new string to the code, you must assign it a new index. Use the number below for
// that index and increase the number below by one.
#define XSTR_SIZE 1640
// struct to allow for strings.tbl-determined x offset
// offset is 0 for english, by default
typedef struct {
const char *str;
int offset_x; // string offset in 640
int offset_x_hi; // string offset in 1024
} lcl_xstr;
//char *Xstr_table[XSTR_SIZE];
lcl_xstr Xstr_table[XSTR_SIZE];
int Xstr_inited = 0;
// table/mission externalization stuff --------------------
#define PARSE_TEXT_BUF_SIZE PARSE_BUF_SIZE
#define PARSE_ID_BUF_SIZE 5
#define LCL_MAX_STRINGS 4500
char *Lcl_ext_str[LCL_MAX_STRINGS];
// ------------------------------------------------------------------------------------------------------------
// LOCALIZE FORWARD DECLARATIONS
//
// given a valid XSTR() tag piece of text, extract the string portion, return it in out, nonzero on success
int lcl_ext_get_text(const char *xstr, char *out);
int lcl_ext_get_text(const SCP_string &xstr, SCP_string &out);
// given a valid XSTR() tag piece of text, extract the id# portion, return the value in out, nonzero on success
int lcl_ext_get_id(const char *xstr, int *out);
int lcl_ext_get_id(const SCP_string &xstr, int *out);
// if the char is a valid char for a signed integer value string
int lcl_is_valid_numeric_char(char c);
// parses the string.tbl and reports back only on the languages it found
void parse_stringstbl_quick(const char *filename);
// ------------------------------------------------------------------------------------------------------------
// LOCALIZE FUNCTIONS
//
// initialize localization, if no language is passed - use the language specified in the registry
void lcl_init(int lang_init)
{
char lang_string[128];
const char *ret;
int lang, idx, i;
// initialize encryption
encrypt_init();
// setup English
Lcl_languages.push_back(Lcl_builtin_languages[FS2_OPEN_DEFAULT_LANGUAGE]);
// check string.tbl to see which languages we support
try
{
parse_stringstbl_quick("strings.tbl");
}
catch (const parse::ParseException& e)
{
mprintf(("TABLES: Unable to parse '%s'! Error message = %s.\n", "strings.tbl", e.what()));
}
parse_modular_table(NOX("*-lcl.tbm"), parse_stringstbl_quick);
// if the only language we have at this point is English, we need to setup the builtin languages as we might be dealing with an old style strings.tbl
// which doesn't support anything beyond the builtin languages. Note, we start at i = 1 because we added English above.
if ((int)Lcl_languages.size() == 1) {
for (i=1; i<NUM_BUILTIN_LANGUAGES; i++) {
Lcl_languages.push_back(Lcl_builtin_languages[i]);
}
}
// read the language from the registry
if(lang_init < 0){
memset(lang_string, 0, 128);
// default to DEFAULT_LANGUAGE (which should be English so we don't have to put German text
// in tstrings in the #default section)
ret = os_config_read_string(NULL, "Language", Lcl_languages[FS2_OPEN_DEFAULT_LANGUAGE].lang_name);
if(ret == NULL){
Error(LOCATION, "Default language not found.");
}
strcpy_s(lang_string, ret);
// look it up
lang = -1;
for(idx = 0; idx < (int)Lcl_languages.size(); idx++){
if(!stricmp(Lcl_languages[idx].lang_name, lang_string)){
lang = idx;
break;
}
}
if(lang < 0){
lang = 0;
}
} else {
Assert((lang_init >= 0) && (lang_init < (int)Lcl_languages.size()));
lang = lang_init;
}
// set the language (this function takes care of setting up file pointers)
lcl_set_language(lang);
}
void lcl_close() {
lcl_xstr_close();
}
// determine what language we're running in, see LCL_* defines above
int lcl_get_language()
{
return Lcl_current_lang;
}
// parses the string.tbl to see which languages are supported. Doesn't read in any strings.
void parse_stringstbl_quick(const char *filename)
{
lang_info language;
int lang_idx;
int i;
read_file_text(filename, CF_TYPE_TABLES);
reset_parse();
if (optional_string("#Supported Languages")) {
while (required_string_either("#End","$Language:")) {
required_string("$Language:");
stuff_string(language.lang_name, F_RAW, LCL_LANG_NAME_LEN + 1);
required_string("+Extension:");
stuff_string(language.lang_ext, F_RAW, LCL_LANG_NAME_LEN + 1);
required_string("+Special Character Index:");
stuff_ubyte(&language.special_char_indexes[0]);
for (i = 1; i < LCL_MAX_FONTS; ++i) {
// default to "none"/0 except for font03 which defaults to 176
// NOTE: fonts.tbl may override these values
if (i == font::FONT3) {
language.special_char_indexes[i] = 176;
} else {
language.special_char_indexes[i] = 0;
}
}
lang_idx = -1;
// see if we already have this language
for (i = 0; i < (int)Lcl_languages.size(); i++) {
if (!strcmp(Lcl_languages[i].lang_name, language.lang_name)) {
strcpy_s(Lcl_languages[i].lang_ext, language.lang_ext);
Lcl_languages[i].special_char_indexes[0] = language.special_char_indexes[0];
lang_idx = i;
break;
}
}
// if we have a new language, add it.
if (lang_idx == -1) {
Lcl_languages.push_back(language);
}
}
}
}
// Unified function for loading strings.tbl and tstrings.tbl (and their modular versions).
// The "external" parameter controls which format to load: true for tstrings.tbl, false for strings.tbl
void parse_stringstbl_common(const char *filename, const bool external)
{
char chr, buf[4096];
char language_tag[512];
int z, index;
char *p_offset = NULL;
int offset_lo = 0, offset_hi = 0;
read_file_text(filename, CF_TYPE_TABLES);
reset_parse();
// move down to the proper section
memset(language_tag, 0, sizeof(language_tag));
strcpy_s(language_tag, "#");
if (external && Lcl_current_lang == FS2_OPEN_DEFAULT_LANGUAGE){
strcat_s(language_tag, "default");
} else {
strcat_s(language_tag, Lcl_languages[Lcl_current_lang].lang_name);
}
if ( skip_to_string(language_tag) != 1 ) {
mprintf(("Current language not found in %s\n", filename));
return;
}
// parse all the strings in this section of the table
while ( !check_for_string("#") ) {
int num_offsets_on_this_line = 0;
stuff_int(&index);
if (external) {
ignore_white_space();
get_string(buf, sizeof(buf));
drop_trailing_white_space(buf);
} else {
stuff_string(buf, F_RAW, sizeof(buf));
}
if (external && (index < 0 || index >= LCL_MAX_STRINGS)) {
error_display(0, "Invalid tstrings table index specified (%i). Please increment LCL_MAX_STRINGS in localize.cpp.", index);
return;
} else if (!external && (index < 0 || index >= XSTR_SIZE)) {
Error(LOCATION, "Invalid strings table index specified (%i)", index);
}
if (!external) {
size_t i = strlen(buf);
while (i--) {
if ( !isspace(buf[i]) )
break;
}
// trim unnecessary end of string
// Assert(buf[i] == '"');
if (buf[i] != '"') {
// probably an offset on this entry
// drop down a null terminator (prolly unnecessary)
buf[i+1] = 0;
// back up over the potential offset
while ( !is_white_space(buf[i]) )
i--;
// now back up over intervening spaces
while ( is_white_space(buf[i]) )
i--;
num_offsets_on_this_line = 1;
if (buf[i] != '"') {
// could have a 2nd offset value (one for 640, one for 1024)
// so back up again
while ( !is_white_space(buf[i]) )
i--;
// now back up over intervening spaces
while ( is_white_space(buf[i]) )
i--;
num_offsets_on_this_line = 2;
}
p_offset = &buf[i+1]; // get ptr to string section with offset in it
if (buf[i] != '"')
Error(LOCATION, "%s is corrupt", filename); // now its an error
}
buf[i] = 0;
// copy string into buf
z = 0;
for (i = 1; buf[i]; i++) {
chr = buf[i];
if (chr == '\\') {
chr = buf[++i];
if (chr == 'n')
chr = '\n';
else if (chr == 'r')
chr = '\r';
}
buf[z++] = chr;
}
// null terminator on buf
buf[z] = 0;
}
// write into Xstr_table (for strings.tbl) or Lcl_ext_str (for tstrings.tbl)
if (Parsing_modular_table) {
if ( external && (Lcl_ext_str[index] != NULL) ) {
vm_free((void *) Lcl_ext_str[index]);
Lcl_ext_str[index] = NULL;
} else if ( !external && (Xstr_table[index].str != NULL) ) {
vm_free((void *) Xstr_table[index].str);
Xstr_table[index].str = NULL;
}
}
if (external && (Lcl_ext_str[index] != NULL)) {
Warning(LOCATION, "Tstrings table index %d used more than once", index);
} else if (!external && (Xstr_table[index].str != NULL)) {
Warning(LOCATION, "Strings table index %d used more than once", index);
}
if (external) {
Lcl_ext_str[index] = vm_strdup(buf);
} else {
Xstr_table[index].str = vm_strdup(buf);
}
// the rest of this loop applies only to strings.tbl,
// so we can move on to the next line if we're reading from tstrings.tbl
if (external) {
continue;
}
// read offset information, assume 0 if nonexistant
if (p_offset != NULL) {
if (sscanf(p_offset, "%d%d", &offset_lo, &offset_hi) < num_offsets_on_this_line) {
// whatever is in the file ain't a proper offset
Error(LOCATION, "%s is corrupt", filename);
}
}
Xstr_table[index].offset_x = offset_lo;
if (num_offsets_on_this_line == 2)
Xstr_table[index].offset_x_hi = offset_hi;
else
Xstr_table[index].offset_x_hi = offset_lo;
// clear out our vars
p_offset = NULL;
offset_lo = 0;
offset_hi = 0;
}
}
void parse_stringstbl(const char *filename)
{
parse_stringstbl_common(filename, false);
}
void parse_tstringstbl(const char *filename)
{
parse_stringstbl_common(filename, true);
}
// initialize the xstr table
void lcl_xstr_init()
{
int i;
for (i = 0; i < XSTR_SIZE; i++)
Xstr_table[i].str = NULL;
for (i = 0; i < LCL_MAX_STRINGS; i++)
Lcl_ext_str[i] = NULL;
try
{
parse_stringstbl("strings.tbl");
}
catch (const parse::ParseException& e)
{
mprintf(("TABLES: Unable to parse '%s'! Error message = %s.\n", "strings.tbl", e.what()));
}
parse_modular_table(NOX("*-lcl.tbm"), parse_stringstbl);
try
{
parse_tstringstbl("tstrings.tbl");
}
catch (const parse::ParseException& e)
{
mprintf(("TABLES: Unable to parse '%s'! Error message = %s.\n", "tstrings.tbl", e.what()));
}
parse_modular_table(NOX("*-tlc.tbm"), parse_tstringstbl);
Xstr_inited = 1;
}
// free Xstr table
void lcl_xstr_close()
{
int i;
for (i=0; i<XSTR_SIZE; i++){
if (Xstr_table[i].str != NULL) {
vm_free((void *) Xstr_table[i].str);
Xstr_table[i].str = NULL;
}
}
for (i=0; i<LCL_MAX_STRINGS; i++){
if (Lcl_ext_str[i] != NULL) {
vm_free((void *) Lcl_ext_str[i]);
Lcl_ext_str[i] = NULL;
}
}
}
// set our current language
void lcl_set_language(int lang)
{
Lcl_current_lang = lang;
nprintf(("General", "Setting language to %s\n", Lcl_languages[lang].lang_name));
Assertion((Lcl_current_lang >= 0) && (Lcl_current_lang < (int)Lcl_languages.size()), "Attempt to set language to an invalid language");
// flag the proper language as being active
Lcl_special_chars = Lcl_languages[Lcl_current_lang].special_char_indexes[0];
Lcl_fr = 0;
Lcl_gr = 0;
Lcl_pl = 0;
Lcl_english = 0;
if (!strcmp(Lcl_languages[Lcl_current_lang].lang_name, Lcl_builtin_languages[LCL_ENGLISH].lang_name)) {
Lcl_english = 1;
} else if (!strcmp(Lcl_languages[Lcl_current_lang].lang_name, Lcl_builtin_languages[LCL_FRENCH].lang_name)) {
Lcl_fr = 1;
} else if (!strcmp(Lcl_languages[Lcl_current_lang].lang_name, Lcl_builtin_languages[LCL_GERMAN].lang_name)) {
Lcl_gr = 1;
} else if (!strcmp(Lcl_languages[Lcl_current_lang].lang_name, Lcl_builtin_languages[LCL_POLISH].lang_name)) {
Lcl_pl = 1;
}
}
ubyte lcl_get_font_index(int font_num)
{
Assertion((font_num >= 0) && (font_num < LCL_MAX_FONTS), "Passed an invalid font index");
Assertion((Lcl_current_lang >= 0) && (Lcl_current_lang < (int)Lcl_languages.size()), "Current language is not valid, can't get font indexes");
return Lcl_languages[Lcl_current_lang].special_char_indexes[font_num];
}
// maybe add on an appropriate subdirectory when opening a localized file
void lcl_add_dir(char *current_path)
{
char last_char;
size_t path_len;
// if the disk extension is 0 length, don't add enything
if (strlen(Lcl_languages[Lcl_current_lang].lang_ext) <= 0) {
return;
}
// get the length of the string so far
path_len = strlen(current_path);
if (path_len <= 0) {
return;
}
// get the current last char
last_char = current_path[path_len - 1];
// if the last char is a slash, just copy in the disk extension
if (last_char == DIR_SEPARATOR_CHAR) {
strcat(current_path, Lcl_languages[Lcl_current_lang].lang_ext);
strcat(current_path, DIR_SEPARATOR_STR);
}
// otherwise add a slash, then copy in the disk extension
else {
strcat(current_path, DIR_SEPARATOR_STR);
strcat(current_path, Lcl_languages[Lcl_current_lang].lang_ext);
}
}
// maybe add localized directory to full path with file name when opening a localized file
int lcl_add_dir_to_path_with_filename(char *current_path, size_t path_max)
{
// if the disk extension is 0 length, don't add anything
if (strlen(Lcl_languages[Lcl_current_lang].lang_ext) <= 0) {
return 1;
}
size_t str_size = path_max + 1;
char *temp = new char[str_size];
memset(temp, 0, str_size * sizeof(char));
// find position of last slash and copy rest of filename (not counting slash) to temp
// mark end of current path with '\0', so strcat will work
char *last_slash = strrchr(current_path, DIR_SEPARATOR_CHAR);
if (last_slash == NULL) {
strncpy(temp, current_path, path_max);
current_path[0] = '\0';
} else {
strncpy(temp, last_slash+1, path_max);
last_slash[1] = '\0';
}
// add extension
strcat_s(current_path, path_max, Lcl_languages[Lcl_current_lang].lang_ext);
strcat_s(current_path, path_max, DIR_SEPARATOR_STR );
// copy rest of filename from temp
strcat_s(current_path, path_max, temp);
delete [] temp;
return 1;
}
// externalization of table/mission files -----------------------
void lcl_replace_stuff(char *text, size_t max_len)
{
if (Fred_running)
return;
Assert(text); // Goober5000
// delegate to SCP_string for the replacements
SCP_string temp_text = text;
lcl_replace_stuff(temp_text);
// fill up the original string
size_t len = temp_text.copy(text, max_len);
text[len] = 0;
}
// Goober5000 - replace stuff in the string, e.g. $callsign with player's callsign
// now will also replace $rank with rank, e.g. "Lieutenant"
// now will also replace $quote with double quotation marks
// now will also replace $semicolon with semicolon mark
// now will also replace $slash and $backslash
void lcl_replace_stuff(SCP_string &text)
{
if (Fred_running)
return;
if (Player != NULL)
{
replace_all(text, "$callsign", Player->callsign);
replace_all(text, "$rank", Ranks[Player->stats.rank].name);
}
replace_all(text, "$quote", "\"");
replace_all(text, "$semicolon", ";");
replace_all(text, "$slash", "/");
replace_all(text, "$backslash", "\\");
}
void lcl_fred_replace_stuff(char *text, size_t max_len)
{
if (!Fred_running)
return;
Assert(text); // Goober5000
// delegate to SCP_string for the replacements
SCP_string temp_text = text;
lcl_fred_replace_stuff(temp_text);
// fill up the original string
size_t len = temp_text.copy(text, max_len);
text[len] = 0;
}
void lcl_fred_replace_stuff(SCP_string &text)
{
if (!Fred_running)
return;
replace_all(text, "\"", "$quote");
replace_all(text, ";", "$semicolon");
replace_all(text, "/", "$slash");
replace_all(text, "\\", "$backslash");
}
// get the localized version of the string. if none exists, return the original string
// valid input to this function includes :
// "this is some text"
// XSTR("wheeee", -1)
// XSTR("whee", 20)
// and these should cover all the externalized string cases
// fills in id if non-NULL. a value of -2 indicates it is not an external string
void lcl_ext_localize_sub(const char *in, char *out, size_t max_len, int *id)
{
char text_str[PARSE_BUF_SIZE]="";
int str_id;
size_t str_len;
Assert(in);
Assert(out);
// default (non-external string) value
if (id != NULL) {
*id = -2;
}
str_len = strlen(in);
// if the string is < 9 chars, it can't be an XSTR("",) tag, so just copy it
if (str_len < 9) {
if (str_len > max_len)
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", in, str_len, max_len);
strncpy(out, in, max_len);
if (id != NULL)
*id = -2;
return;
}
// otherwise, check to see if it's an XSTR() tag
if (strnicmp(in, "XSTR", 4)) {
// NOT an XSTR() tag
if (str_len > max_len)
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", in, str_len, max_len);
strncpy(out, in, max_len);
if (id != NULL)
*id = -2;
return;
}
// at this point we _know_ its an XSTR() tag, so split off the strings and id sections
if (!lcl_ext_get_text(in, text_str)) {
if (str_len > max_len)
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", in, str_len, max_len);
strncpy(out, in, max_len);
if (id != NULL)
*id = -1;
return;
}
if (!lcl_ext_get_id(in, &str_id)) {
if (str_len > max_len)
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", in, str_len, max_len);
strncpy(out, in, max_len);
if (id != NULL)
*id = -1;
return;
}
// if the localization file is not open, or we're running in the default language, return the original string
if ( !Xstr_inited || (str_id < 0) || (Lcl_current_lang == FS2_OPEN_DEFAULT_LANGUAGE) ) {
if ( strlen(text_str) > max_len )
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", text_str, strlen(text_str), max_len);
strncpy(out, text_str, max_len);
if (id != NULL)
*id = str_id;
return;
}
// get the string if it exists
if ((str_id < LCL_MAX_STRINGS) && (Lcl_ext_str[str_id] != NULL)) {
// copy to the outgoing string
if ( strlen(Lcl_ext_str[str_id]) > max_len )
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", Lcl_ext_str[str_id], strlen(Lcl_ext_str[str_id]), max_len);
strncpy(out, Lcl_ext_str[str_id], max_len);
}
// otherwise use what we have - probably should Int3() or assert here
else {
if ( strlen(text_str) > max_len )
error_display(0, "Token too long: [%s]. Length = %i. Max is %i.\n", text_str, strlen(text_str), max_len);
if (str_id >= LCL_MAX_STRINGS)
error_display(0, "Invalid XSTR ID: [%d]. (Must be less than %d.)\n", str_id, LCL_MAX_STRINGS);
strncpy(out, text_str, max_len);
}
// set the id #
if (id != NULL) {
*id = str_id;
}
}
// ditto for SCP_string
void lcl_ext_localize_sub(const SCP_string &in, SCP_string &out, int *id)
{
SCP_string text_str = "";
int str_id;
// default (non-external string) value
if (id != NULL) {
*id = -2;
}
// if the string is < 9 chars, it can't be an XSTR("",) tag, so just copy it
if (in.length() < 9) {
out = in;
if (id != NULL)
*id = -2;
return;
}
// otherwise, check to see if it's an XSTR() tag
if (in.compare(0, 4, "XSTR")) {
// NOT an XSTR() tag
out = in;
if (id != NULL)
*id = -2;
return;
}
// at this point we _know_ its an XSTR() tag, so split off the strings and id sections
if (!lcl_ext_get_text(in, text_str)) {
out = in;
if (id != NULL)
*id = -1;
return;
}
if (!lcl_ext_get_id(in, &str_id)) {
out = in;
if (id != NULL)
*id = -1;
return;
}
// if the localization file is not open, or we're running in the default language, return the original string
if ( !Xstr_inited || (str_id < 0) || (Lcl_current_lang == FS2_OPEN_DEFAULT_LANGUAGE) ) {
out = text_str;
if (id != NULL)
*id = str_id;
return;
}
// get the string if it exists
if ((str_id < LCL_MAX_STRINGS) && (Lcl_ext_str[str_id] != NULL)) {
// copy to the outgoing string
out = Lcl_ext_str[str_id];
}
// otherwise use what we have - probably should Int3() or assert here
else {
if (str_id >= LCL_MAX_STRINGS)
error_display(0, "Invalid XSTR ID: [%d]. (Must be less than %d.)\n", str_id, LCL_MAX_STRINGS);
out = text_str;
}
// set the id #
if (id != NULL){
*id = str_id;
}
}
// Goober5000 - wrapper for lcl_ext_localize_sub; used because lcl_replace_stuff has to
// be called *after* the translation is done, and the original function returned in so
// many places that it would be messy to call lcl_replace_stuff everywhere
void lcl_ext_localize(const char *in, char *out, size_t max_len, int *id)
{
// do XSTR translation
lcl_ext_localize_sub(in, out, max_len, id);
// do translation of $callsign, $rank, etc.
lcl_replace_stuff(out, max_len);
}
// ditto for SCP_string
void lcl_ext_localize(const SCP_string &in, SCP_string &out, int *id)
{
// do XSTR translation
lcl_ext_localize_sub(in, out, id);
// do translation of $callsign, $rank, etc.
lcl_replace_stuff(out);
}
// translate the specified string based upon the current language
const char *XSTR(const char *str, int index)
{
if(!Xstr_inited)
{
Int3();
return str;
}
// perform a lookup
if (index >= 0 && index < XSTR_SIZE)
{
// return translation of string
if (Xstr_table[index].str)
return Xstr_table[index].str;
}
// can't translate; return original english string
return str;
}
// retrieve the offset for a localized string
int lcl_get_xstr_offset(int index, int res)
{
if (res == GR_640) {
return Xstr_table[index].offset_x;
} else {
return Xstr_table[index].offset_x_hi;
}
}
// ------------------------------------------------------------------------------------------------------------
// LOCALIZE FORWARD DEFINITIONS
//
// given a valid XSTR() tag piece of text, extract the string portion, return it in out, nonzero on success
int lcl_ext_get_text(const char *xstr, char *out)
{
size_t str_start, str_end;
size_t str_len;
const char *p, *p2;
Assert(xstr != NULL);
Assert(out != NULL);
str_len = strlen(xstr);
// this is some crazy wack-ass code.
// look for the open quote
str_start = str_end = 0;
p = strstr(xstr, "\"");
if(p == NULL){
error_display(0, "Error parsing XSTR() tag %s\n", xstr);
return 0;
} else {
str_start = p - xstr + 1;
}
// make sure we're not about to walk past the end of the string
if(static_cast<size_t>(p - xstr) >= str_len){
error_display(0, "Error parsing XSTR() tag %s\n", xstr);
return 0;
}
// look for the close quote
p2 = strstr(p+1, "\"");
if(p2 == NULL){
error_display(0, "Error parsing XSTR() tag %s\n", xstr);
return 0;
} else {
str_end = p2 - xstr;
}
// check bounds
if (str_end - str_start > PARSE_BUF_SIZE - 1) {
error_display(0, "String cannot fit within XSTR buffer!\n\n%s\n", xstr);
return 0;
}
// now that we know the boundaries of the actual string in the XSTR() tag, copy it
memcpy(out, xstr + str_start, str_end - str_start);
// success
return 1;
}
// given a valid XSTR() tag piece of text, extract the string portion, return it in out, nonzero on success
int lcl_ext_get_text(const SCP_string &xstr, SCP_string &out)
{
size_t open_quote_pos, close_quote_pos;
// this is some crazy wack-ass code.
// look for the open quote
open_quote_pos = xstr.find('\"');
if (open_quote_pos == SCP_string::npos) {
error_display(0, "Error parsing XSTR() tag %s\n", xstr.c_str());
return 0;
}
// look for the close quote
close_quote_pos = xstr.find('\"', open_quote_pos+1);
if (close_quote_pos == SCP_string::npos) {
error_display(0, "Error parsing XSTR() tag %s\n", xstr.c_str());
return 0;
}
// now that we know the boundaries of the actual string in the XSTR() tag, copy it
out.assign(xstr, open_quote_pos + 1, close_quote_pos - open_quote_pos - 1);
// success
return 1;
}
// given a valid XSTR() tag piece of text, extract the id# portion, return the value in out, nonzero on success
int lcl_ext_get_id(const char *xstr, int *out)
{
const char *p, *pnext;
size_t str_len;
Assert(xstr != NULL);
Assert(out != NULL);
str_len = strlen(xstr);
// find the first quote
p = strchr(xstr, '"');
if(p == NULL){
error_display(0, "Error parsing id# in XSTR() tag %s\n", xstr);
return 0;
}
// make sure we're not about to walk off the end of the string
if(static_cast<size_t>(p - xstr) >= str_len){
error_display(0, "Error parsing id# in XSTR() tag %s\n", xstr);
return 0;
}
p++;
// continue searching until we find the close quote
while(true){
pnext = strchr(p, '"');
if(pnext == NULL){
error_display(0, "Error parsing id# in XSTR() tag %s\n", xstr);
return 0;
}
// if the previous char is a \, we know its not the "end-of-string" quote
if(*(pnext - 1) != '\\'){
p = pnext;
break;
}
// continue