(svn r7759) -Merge: makefile rewrite. This merge features:

 - A proper ./configure, so everything needs to be configured only once, not for every make.
 - Usage of makedepend when available. This greatly reduces the time needed for generating the dependencies.
 - A generator for all project files. There is a single file with sources, which is used to generate Makefiles and the project files for MSVC.
 - Proper support for OSX universal binaries.
 - Object files for non-MSVC compiles are also placed in separate directories, making is faster to switch between debug and release compiles and it does not touch the directory with the source files.
 - Functionality to make a bundle of all needed files for for example a nightly or distribution of a binary with all needed GRFs and language files.

Note: as this merge moves almost all files, it is recommended to make a backup of your working copy before updating your working copy.

1 files changed, 1399 insertions, 0 deletions

diff --git a/src/strgen/strgen.c b/src/strgen/strgen.c
new file mode 100644
index 000000000..1726750f5
--- /dev/null
+++ b/src/strgen/strgen.c
@@ -0,0 +1,1399 @@
+/* $Id$ */
+
+#include "../stdafx.h"
+#include "../macros.h"
+#include "../string.h"
+#include "../table/control_codes.h"
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+#include <stdarg.h>
+
+#if (!defined(WIN32) && !defined(WIN64)) || defined(__CYGWIN__)
+#include <unistd.h>
+#endif
+
+#if defined WIN32 || defined __WATCOMC__
+#include <direct.h>
+#endif /* WIN32 || __WATCOMC__ */
+
+#ifdef __MORPHOS__
+#ifdef stderr
+#undef stderr
+#endif
+#define stderr stdout
+#endif /* __MORPHOS__ */
+
+#ifdef __WATCOMC__
+	uint _map_log_x;     // an unpleasant hack required because Watcom is insisting on
+	uint _map_size_x;    // these variables being valid references in map.h
+	uint _map_size_y;
+	uint _map_tile_mask;
+	uint _map_size;
+#endif /* __WATCOMC__ */
+
+/* Compiles a list of strings into a compiled string list */
+
+typedef void (*ParseCmdProc)(char *buf, int value);
+
+typedef struct LanguagePackHeader {
+	uint32 ident;
+	uint32 version;     // 32-bits of auto generated version info which is basically a hash of strings.h
+	char name[32];      // the international name of this language
+	char own_name[32];  // the localized name of this language
+	char isocode[16];   // the ISO code for the language (not country code)
+	uint16 offsets[32]; // the offsets
+	byte plural_form;   // plural form index
+	byte pad[3];        // pad header to be a multiple of 4
+} LanguagePackHeader;
+
+typedef struct CmdStruct {
+	const char *cmd;
+	ParseCmdProc proc;
+	long value;
+	int8 consumes;
+	byte flags;
+} CmdStruct;
+
+enum {
+	C_DONTCOUNT = 1,
+	C_CASE      = 2,
+};
+
+
+typedef struct Case {
+	int caseidx;
+	char *string;
+	struct Case *next;
+} Case;
+
+static bool _masterlang;
+static bool _translated;
+static const char* _file = "(unknown file)";
+static int _cur_line;
+static int _errors, _warnings;
+
+typedef struct LangString {
+	char *name;            // Name of the string
+	char *english;         // English text
+	char *translated;      // Translated text
+	uint16 hash_next;      // next hash entry
+	uint16 index;
+	int line;              // line of string in source-file
+	Case *english_case;    // cases for english
+	Case *translated_case; // cases for foreign
+} LangString;
+
+static LangString *_strings[65536];
+
+
+#define HASH_SIZE 32767
+static uint16 _hash_head[HASH_SIZE];
+
+static byte _put_buf[4096];
+static int _put_pos;
+static int _next_string_id;
+
+static uint32 _hash;
+static char _lang_name[32], _lang_ownname[32], _lang_isocode[16];
+static byte _lang_pluralform;
+#define MAX_NUM_GENDER 8
+static char _genders[MAX_NUM_GENDER][8];
+static int _numgenders;
+
+// contains the name of all cases.
+#define MAX_NUM_CASES 50
+static char _cases[MAX_NUM_CASES][16];
+static int _numcases;
+
+// for each plural value, this is the number of plural forms.
+static const byte _plural_form_counts[] = { 2, 1, 2, 3, 3, 3, 3, 3, 4 };
+
+static const char *_cur_ident;
+
+typedef struct CmdPair {
+	const CmdStruct *a;
+	char *v;
+} CmdPair;
+
+typedef struct ParsedCommandStruct {
+	int np;
+	CmdPair pairs[32];
+	const CmdStruct *cmd[32]; // ordered by param #
+} ParsedCommandStruct;
+
+// Used when generating some advanced commands.
+static ParsedCommandStruct _cur_pcs;
+static int _cur_argidx;
+
+static uint HashStr(const char *s)
+{
+	uint hash = 0;
+	for (; *s != '\0'; s++) hash = ROL(hash, 3) ^ *s;
+	return hash % HASH_SIZE;
+}
+
+static void HashAdd(const char *s, LangString *ls)
+{
+	uint hash = HashStr(s);
+	ls->hash_next = _hash_head[hash];
+	_hash_head[hash] = ls->index + 1;
+}
+
+static LangString *HashFind(const char *s)
+{
+	int idx = _hash_head[HashStr(s)];
+
+	while (--idx >= 0) {
+		LangString* ls = _strings[idx];
+
+		if (strcmp(ls->name, s) == 0) return ls;
+		idx = ls->hash_next;
+	}
+	return NULL;
+}
+
+#ifdef _MSC_VER
+# define LINE_NUM_FMT "(%d)"
+#else
+# define LINE_NUM_FMT ":%d"
+#endif
+
+static void CDECL warning(const char *s, ...)
+{
+	char buf[1024];
+	va_list va;
+	va_start(va, s);
+	vsnprintf(buf, lengthof(buf), s, va);
+	va_end(va);
+	fprintf(stderr, "%s" LINE_NUM_FMT ": warning: %s\n", _file, _cur_line, buf);
+	_warnings++;
+}
+
+void CDECL error(const char *s, ...)
+{
+	char buf[1024];
+	va_list va;
+	va_start(va, s);
+	vsnprintf(buf, lengthof(buf), s, va);
+	va_end(va);
+	fprintf(stderr, "%s" LINE_NUM_FMT ": error: %s\n", _file, _cur_line, buf);
+	_errors++;
+}
+
+
+static void NORETURN CDECL fatal(const char *s, ...)
+{
+	char buf[1024];
+	va_list va;
+	va_start(va, s);
+	vsnprintf(buf, lengthof(buf), s, va);
+	va_end(va);
+	fprintf(stderr, "%s" LINE_NUM_FMT ": FATAL: %s\n", _file, _cur_line, buf);
+	exit(1);
+}
+
+static void PutByte(byte c)
+{
+	if (_put_pos == lengthof(_put_buf)) fatal("Put buffer too small");
+	_put_buf[_put_pos++] = c;
+}
+
+
+static void PutUtf8(uint32 value)
+{
+	if (value < 0x80) {
+		PutByte(value);
+	} else if (value < 0x800) {
+		PutByte(0xC0 + GB(value,  6, 5));
+		PutByte(0x80 + GB(value,  0, 6));
+	} else if (value < 0x10000) {
+		PutByte(0xE0 + GB(value, 12, 4));
+		PutByte(0x80 + GB(value,  6, 6));
+		PutByte(0x80 + GB(value,  0, 6));
+	} else if (value < 0x110000) {
+		PutByte(0xF0 + GB(value, 18, 3));
+		PutByte(0x80 + GB(value, 12, 6));
+		PutByte(0x80 + GB(value,  6, 6));
+		PutByte(0x80 + GB(value,  0, 6));
+	} else {
+		warning("Invalid unicode value U+0x%X", value);
+	}
+}
+
+
+size_t Utf8Validate(const char *s)
+{
+	uint32 c;
+
+	if (!HASBIT(s[0], 7)) {
+		/* 1 byte */
+		return 1;
+	} else if (GB(s[0], 5, 3) == 6 && IsUtf8Part(s[1])) {
+		/* 2 bytes */
+		c = GB(s[0], 0, 5) << 6 | GB(s[1], 0, 6);
+		if (c >= 0x80) return 2;
+	} else if (GB(s[0], 4, 4) == 14 && IsUtf8Part(s[1]) && IsUtf8Part(s[2])) {
+		/* 3 bytes */
+		c = GB(s[0], 0, 4) << 12 | GB(s[1], 0, 6) << 6 | GB(s[2], 0, 6);
+		if (c >= 0x800) return 3;
+	} else if (GB(s[0], 3, 5) == 30 && IsUtf8Part(s[1]) && IsUtf8Part(s[2]) && IsUtf8Part(s[3])) {
+		/* 4 bytes */
+		c = GB(s[0], 0, 3) << 18 | GB(s[1], 0, 6) << 12 | GB(s[2], 0, 6) << 6 | GB(s[3], 0, 6);
+		if (c >= 0x10000 && c <= 0x10FFFF) return 4;
+	}
+
+	return 0;
+}
+
+
+static void EmitSingleChar(char *buf, int value)
+{
+	if (*buf != '\0') warning("Ignoring trailing letters in command");
+	PutUtf8(value);
+}
+
+
+static void EmitSetX(char *buf, int value)
+{
+	char *err;
+	int x = strtol(buf, &err, 0);
+	if (*err != 0) fatal("SetX param invalid");
+	PutUtf8(SCC_SETX);
+	PutByte((byte)x);
+}
+
+
+static void EmitSetXY(char *buf, int value)
+{
+	char *err;
+	int x;
+	int y;
+
+	x = strtol(buf, &err, 0);
+	if (*err != ' ') fatal("SetXY param invalid");
+	y = strtol(err + 1, &err, 0);
+	if (*err != 0) fatal("SetXY param invalid");
+
+	PutUtf8(SCC_SETXY);
+	PutByte((byte)x);
+	PutByte((byte)y);
+}
+
+// The plural specifier looks like
+// {NUM} {PLURAL -1 passenger passengers} then it picks either passenger/passengers depending on the count in NUM
+
+// This is encoded like
+//  CommandByte <ARG#> <NUM> {Length of each string} {each string}
+
+bool ParseRelNum(char **buf, int *value)
+{
+	const char* s = *buf;
+	char* end;
+	bool rel = false;
+	int v;
+
+	while (*s == ' ' || *s == '\t') s++;
+	if (*s == '+') {
+		rel = true;
+		s++;
+	}
+	v = strtol(s, &end, 0);
+	if (end == s) return false;
+	if (rel || v < 0) {
+		*value += v;
+	} else {
+		*value = v;
+	}
+	*buf = end;
+	return true;
+}
+
+// Parse out the next word, or NULL
+char *ParseWord(char **buf)
+{
+	char *s = *buf, *r;
+
+	while (*s == ' ' || *s == '\t') s++;
+	if (*s == '\0') return NULL;
+
+	if (*s == '"') {
+		r = ++s;
+		// parse until next " or NUL
+		for (;;) {
+			if (*s == '\0') break;
+			if (*s == '"') {
+				*s++ = '\0';
+				break;
+			}
+			s++;
+		}
+	} else {
+		// proceed until whitespace or NUL
+		r = s;
+		for (;;) {
+			if (*s == '\0') break;
+			if (*s == ' ' || *s == '\t') {
+				*s++ = '\0';
+				break;
+			}
+			s++;
+		}
+	}
+	*buf = s;
+	return r;
+}
+
+// Forward declaration
+static int TranslateArgumentIdx(int arg);
+
+static void EmitWordList(const char* const* words, uint nw)
+{
+	uint i;
+	uint j;
+
+	PutByte(nw);
+	for (i = 0; i < nw; i++) PutByte(strlen(words[i]));
+	for (i = 0; i < nw; i++) {
+		for (j = 0; words[i][j] != '\0'; j++) PutByte(words[i][j]);
+	}
+}
+
+static void EmitPlural(char *buf, int value)
+{
+	int argidx = _cur_argidx;
+	const char* words[5];
+	int nw = 0;
+
+	// Parse out the number, if one exists. Otherwise default to prev arg.
+	if (!ParseRelNum(&buf, &argidx)) argidx--;
+
+	// Parse each string
+	for (nw = 0; nw < 5; nw++) {
+		words[nw] = ParseWord(&buf);
+		if (words[nw] == NULL) break;
+	}
+
+	if (nw == 0)
+		fatal("%s: No plural words", _cur_ident);
+
+	if (_plural_form_counts[_lang_pluralform] != nw) {
+		if (_translated) {
+			fatal("%s: Invalid number of plural forms. Expecting %d, found %d.", _cur_ident,
+				_plural_form_counts[_lang_pluralform], nw);
+		} else {
+			warning("'%s' is untranslated. Tweaking english string to allow compilation for plural forms", _cur_ident);
+			if (nw > _plural_form_counts[_lang_pluralform]) {
+				nw = _plural_form_counts[_lang_pluralform];
+			} else {
+				for (; nw < _plural_form_counts[_lang_pluralform]; nw++) {
+					words[nw] = words[nw - 1];
+				}
+			}
+		}
+	}
+
+	PutUtf8(SCC_PLURAL_LIST);
+	PutByte(TranslateArgumentIdx(argidx));
+	EmitWordList(words, nw);
+}
+
+
+static void EmitGender(char *buf, int value)
+{
+	int argidx = _cur_argidx;
+	uint nw;
+
+	if (buf[0] == '=') {
+		buf++;
+
+		// This is a {G=DER} command
+		for (nw = 0; ; nw++) {
+			if (nw >= 8) fatal("G argument '%s' invalid", buf);
+			if (strcmp(buf, _genders[nw]) == 0) break;
+		}
+		// now nw contains the gender index
+		PutUtf8(SCC_GENDER_INDEX);
+		PutByte(nw);
+	} else {
+		const char* words[8];
+
+		// This is a {G 0 foo bar two} command.
+		// If no relative number exists, default to +0
+		if (!ParseRelNum(&buf, &argidx)) {}
+
+		for (nw = 0; nw < 8; nw++) {
+			words[nw] = ParseWord(&buf);
+			if (words[nw] == NULL) break;
+		}
+		if (nw != _numgenders) fatal("Bad # of arguments for gender command");
+		PutUtf8(SCC_GENDER_LIST);
+		PutByte(TranslateArgumentIdx(argidx));
+		EmitWordList(words, nw);
+	}
+}
+
+
+static const CmdStruct _cmd_structs[] = {
+	// Update position
+	{"SETX",  EmitSetX,  SCC_SETX,  0, 0},
+	{"SETXY", EmitSetXY, SCC_SETXY, 0, 0},
+
+	// Font size
+	{"TINYFONT", EmitSingleChar, SCC_TINYFONT, 0, 0},
+	{"BIGFONT",  EmitSingleChar, SCC_BIGFONT,  0, 0},
+
+	// Colors
+	{"BLUE",    EmitSingleChar, SCC_BLUE,    0, 0},
+	{"SILVER",  EmitSingleChar, SCC_SILVER,  0, 0},
+	{"GOLD",    EmitSingleChar, SCC_GOLD,    0, 0},
+	{"RED",     EmitSingleChar, SCC_RED,     0, 0},
+	{"PURPLE",  EmitSingleChar, SCC_PURPLE,  0, 0},
+	{"LTBROWN", EmitSingleChar, SCC_LTBROWN, 0, 0},
+	{"ORANGE",  EmitSingleChar, SCC_ORANGE,  0, 0},
+	{"GREEN",   EmitSingleChar, SCC_GREEN,   0, 0},
+	{"YELLOW",  EmitSingleChar, SCC_YELLOW,  0, 0},
+	{"DKGREEN", EmitSingleChar, SCC_DKGREEN, 0, 0},
+	{"CREAM",   EmitSingleChar, SCC_CREAM,   0, 0},
+	{"BROWN",   EmitSingleChar, SCC_BROWN,   0, 0},
+	{"WHITE",   EmitSingleChar, SCC_WHITE,   0, 0},
+	{"LTBLUE",  EmitSingleChar, SCC_LTBLUE,  0, 0},
+	{"GRAY",    EmitSingleChar, SCC_GRAY,    0, 0},
+	{"DKBLUE",  EmitSingleChar, SCC_DKBLUE,  0, 0},
+	{"BLACK",   EmitSingleChar, SCC_BLACK,   0, 0},
+
+	{"CURRCOMPACT",   EmitSingleChar, SCC_CURRENCY_COMPACT,    1, 0}, // compact currency (32 bits)
+	{"REV",           EmitSingleChar, SCC_REVISION,            0, 0}, // openttd revision string
+	{"SHORTCARGO",    EmitSingleChar, SCC_CARGO_SHORT,         2, 0}, // short cargo description, only ### tons, or ### litres
+	{"CURRCOMPACT64", EmitSingleChar, SCC_CURRENCY_COMPACT_64, 2, 0}, // compact currency 64 bits
+
+	// These are special versions of {STRING1}
+	// The first string includes the second string.
+	{"COMPANY",    EmitSingleChar, SCC_STRING1, 1, 0},
+	{"PLAYERNAME", EmitSingleChar, SCC_STRING1, 1, 0},
+	{"VEHICLE",    EmitSingleChar, SCC_STRING1, 1, 0},
+
+	{"STRING1", EmitSingleChar, SCC_STRING1, 1, C_CASE}, // included string that consumes ONE argument
+	{"STRING2", EmitSingleChar, SCC_STRING2, 2, C_CASE}, // included string that consumes TWO arguments
+	{"STRING3", EmitSingleChar, SCC_STRING3, 3, C_CASE}, // included string that consumes THREE arguments
+	{"STRING4", EmitSingleChar, SCC_STRING4, 4, C_CASE}, // included string that consumes FOUR arguments
+	{"STRING5", EmitSingleChar, SCC_STRING5, 5, C_CASE}, // included string that consumes FIVE arguments
+
+	{"STATIONFEATURES", EmitSingleChar, SCC_STATION_FEATURES, 1, 0}, // station features string, icons of the features
+	{"INDUSTRY",        EmitSingleChar, SCC_INDUSTRY_NAME,    1, 0}, // industry, takes an industry #
+	{"CARGO",           EmitSingleChar, SCC_CARGO,            2, 0},
+	{"POWER",           EmitSingleChar, SCC_POWER,            1, 0},
+	{"VOLUME",          EmitSingleChar, SCC_VOLUME,           1, 0},
+	{"VOLUME_S",        EmitSingleChar, SCC_VOLUME_SHORT,     1, 0},
+	{"WEIGHT",          EmitSingleChar, SCC_WEIGHT,           1, 0},
+	{"WEIGHT_S",        EmitSingleChar, SCC_WEIGHT_SHORT,     1, 0},
+	{"FORCE",           EmitSingleChar, SCC_FORCE,            1, 0},
+	{"VELOCITY",        EmitSingleChar, SCC_VELOCITY,         1, 0},
+
+	{"P", EmitPlural, 0, 0, C_DONTCOUNT}, // plural specifier
+	{"G", EmitGender, 0, 0, C_DONTCOUNT}, // gender specifier
+
+	{"DATE_TINY",  EmitSingleChar, SCC_DATE_TINY, 1, 0},
+	{"DATE_SHORT", EmitSingleChar, SCC_DATE_SHORT, 1, 0},
+	{"DATE_LONG",  EmitSingleChar, SCC_DATE_LONG, 1, 0},
+
+	{"SKIP", EmitSingleChar, SCC_SKIP, 1, 0},
+
+	{"STRING", EmitSingleChar, SCC_STRING, 1, C_CASE},
+
+	// Numbers
+	{"COMMA", EmitSingleChar, SCC_COMMA, 1, 0}, // Number with comma
+	{"NUM",   EmitSingleChar, SCC_NUM,   1, 0}, // Signed number
+
+	{"CURRENCY",   EmitSingleChar, SCC_CURRENCY,    1, 0},
+	{"CURRENCY64", EmitSingleChar, SCC_CURRENCY_64, 2, 0},
+
+	{"WAYPOINT", EmitSingleChar, SCC_WAYPOINT_NAME, 1, 0}, // waypoint name
+	{"STATION",  EmitSingleChar, SCC_STATION_NAME,  1, 0},
+	{"TOWN",     EmitSingleChar, SCC_TOWN_NAME,     1, 0},
+
+	// 0x9D is used for the pseudo command SETCASE
+	// 0x9E is used for case switching
+
+	{"",               EmitSingleChar, '\n',               0, C_DONTCOUNT},
+	{"{",              EmitSingleChar, '{',                0, C_DONTCOUNT},
+	{"UPARROW",        EmitSingleChar, SCC_UPARROW,        0, 0},
+	{"SMALLUPARROW",   EmitSingleChar, SCC_SMALLUPARROW,   0, 0},
+	{"SMALLDOWNARROW", EmitSingleChar, SCC_SMALLDOWNARROW, 0, 0},
+	{"TRAIN",          EmitSingleChar, SCC_TRAIN,          0, 0},
+	{"LORRY",          EmitSingleChar, SCC_LORRY,          0, 0},
+	{"BUS",            EmitSingleChar, SCC_BUS,            0, 0},
+	{"PLANE",          EmitSingleChar, SCC_PLANE,          0, 0},
+	{"SHIP",           EmitSingleChar, SCC_SHIP,           0, 0},
+	{"NBSP",           EmitSingleChar, 0xA0,               0, C_DONTCOUNT},
+	{"CENT",           EmitSingleChar, 0xA2,               0, C_DONTCOUNT},
+	{"POUNDSIGN",      EmitSingleChar, 0xA3,               0, C_DONTCOUNT},
+	{"EURO",           EmitSingleChar, 0x20AC,             0, C_DONTCOUNT},
+	{"YENSIGN",        EmitSingleChar, 0xA5,               0, C_DONTCOUNT},
+	{"COPYRIGHT",      EmitSingleChar, 0xA9,               0, C_DONTCOUNT},
+	{"DOWNARROW",      EmitSingleChar, SCC_DOWNARROW,      0, C_DONTCOUNT},
+	{"CHECKMARK",      EmitSingleChar, SCC_CHECKMARK,      0, C_DONTCOUNT},
+	{"CROSS",          EmitSingleChar, SCC_CROSS,          0, C_DONTCOUNT},
+	{"REGISTERED",     EmitSingleChar, 0xAE,               0, C_DONTCOUNT},
+	{"RIGHTARROW",     EmitSingleChar, SCC_RIGHTARROW,     0, C_DONTCOUNT},
+	{"SMALLLEFTARROW", EmitSingleChar, SCC_LESSTHAN,       0, C_DONTCOUNT},
+	{"SMALLRIGHTARROW",EmitSingleChar, SCC_GREATERTHAN,    0, C_DONTCOUNT},
+};
+
+
+static const CmdStruct *FindCmd(const char *s, int len)
+{
+	const CmdStruct* cs;
+
+	for (cs = _cmd_structs; cs != endof(_cmd_structs); cs++) {
+		if (strncmp(cs->cmd, s, len) == 0 && cs->cmd[len] == '\0') return cs;
+	}
+	return NULL;
+}
+
+static uint ResolveCaseName(const char *str, uint len)
+{
+	uint i;
+
+	for (i = 0; i < MAX_NUM_CASES; i++) {
+		if (memcmp(_cases[i], str, len) == 0 && _cases[i][len] == 0) return i + 1;
+	}
+	fatal("Invalid case-name '%s'", str);
+}
+
+
+// returns NULL on eof
+// else returns command struct
+static const CmdStruct *ParseCommandString(const char **str, char *param, int *argno, int *casei)
+{
+	const char *s = *str, *start;
+	const CmdStruct *cmd;
+	byte c;
+
+	*argno = -1;
+	*casei = -1;
+
+	// Scan to the next command, exit if there's no next command.
+	for (; *s != '{'; s++) {
+		if (*s == '\0') return NULL;
+	}
+	s++; // Skip past the {
+
+	if (*s >= '0' && *s <= '9') {
+		char *end;
+
+		*argno = strtoul(s, &end, 0);
+		if (*end != ':') fatal("missing arg #");
+		s = end + 1;
+	}
+
+	// parse command name
+	start = s;
+	do {
+		c = *s++;
+	} while (c != '}' && c != ' ' && c != '=' && c != '.' && c != 0);
+
+	cmd = FindCmd(start, s - start - 1);
+	if (cmd == NULL) {
+		error("Undefined command '%.*s'", s - start - 1, start);
+		return NULL;
+	}
+
+	if (c == '.') {
+		const char *casep = s;
+
+		if (!(cmd->flags & C_CASE))
+			fatal("Command '%s' can't have a case", cmd->cmd);
+
+		do c = *s++; while (c != '}' && c != ' ' && c != '\0');
+		*casei = ResolveCaseName(casep, s - casep - 1);
+	}
+
+	if (c == '\0') {
+		error("Missing } from command '%s'", start);
+		return NULL;
+	}
+
+
+	if (c != '}') {
+		if (c == '=') s--;
+		// copy params
+		start = s;
+		for (;;) {
+			c = *s++;
+			if (c == '}') break;
+			if (c == '\0') {
+				error("Missing } from command '%s'", start);
+				return NULL;
+			}
+			if (s - start == 250) fatal("param command too long");
+			*param++ = c;
+		}
+	}
+	*param = '\0';
+
+	*str = s;
+
+	return cmd;
+}
+
+
+static void HandlePragma(char *str)
+{
+	if (!memcmp(str, "id ", 3)) {
+		_next_string_id = strtoul(str + 3, NULL, 0);
+	} else if (!memcmp(str, "name ", 5)) {
+		ttd_strlcpy(_lang_name, str + 5, sizeof(_lang_name));
+	} else if (!memcmp(str, "ownname ", 8)) {
+		ttd_strlcpy(_lang_ownname, str + 8, sizeof(_lang_ownname));
+	} else if (!memcmp(str, "isocode ", 8)) {
+		ttd_strlcpy(_lang_isocode, str + 8, sizeof(_lang_isocode));
+	} else if (!memcmp(str, "plural ", 7)) {
+		_lang_pluralform = atoi(str + 7);
+		if (_lang_pluralform >= lengthof(_plural_form_counts))
+			fatal("Invalid pluralform %d", _lang_pluralform);
+	} else if (!memcmp(str, "gender ", 7)) {
+		char* buf = str + 7;
+
+		for (;;) {
+			const char* s = ParseWord(&buf);
+
+			if (s == NULL) break;
+			if (_numgenders >= MAX_NUM_GENDER) fatal("Too many genders, max %d", MAX_NUM_GENDER);
+			ttd_strlcpy(_genders[_numgenders], s, sizeof(_genders[_numgenders]));
+			_numgenders++;
+		}
+	} else if (!memcmp(str, "case ", 5)) {
+		char* buf = str + 5;
+
+		for (;;) {
+			const char* s = ParseWord(&buf);
+
+			if (s == NULL) break;
+			if (_numcases >= MAX_NUM_CASES) fatal("Too many cases, max %d", MAX_NUM_CASES);
+			ttd_strlcpy(_cases[_numcases], s, sizeof(_cases[_numcases]));
+			_numcases++;
+		}
+	} else {
+		fatal("unknown pragma '%s'", str);
+	}
+}
+
+static void ExtractCommandString(ParsedCommandStruct* p, const char* s, bool warnings)
+{
+	char param[100];
+	int argno;
+	int argidx = 0;
+	int casei;
+
+	memset(p, 0, sizeof(*p));
+
+	for (;;) {
+		// read until next command from a.
+		const CmdStruct* ar = ParseCommandString(&s, param, &argno, &casei);
+
+		if (ar == NULL) break;
+
+		// Sanity checking
+		if (argno != -1 && ar->consumes == 0) fatal("Non consumer param can't have a paramindex");
+
+		if (ar->consumes) {
+			if (argno != -1) argidx = argno;
+			if (argidx < 0 || argidx >= lengthof(p->cmd)) fatal("invalid param idx %d", argidx);
+			if (p->cmd[argidx] != NULL && p->cmd[argidx] != ar) fatal("duplicate param idx %d", argidx);
+
+			p->cmd[argidx++] = ar;
+		} else if (!(ar->flags & C_DONTCOUNT)) { // Ignore some of them
+			if (p->np >= lengthof(p->pairs)) fatal("too many commands in string, max %d", lengthof(p->pairs));
+			p->pairs[p->np].a = ar;
+			p->pairs[p->np].v = param[0] != '\0' ? strdup(param) : "";
+			p->np++;
+		}
+	}
+}
+
+
+static const CmdStruct *TranslateCmdForCompare(const CmdStruct *a)
+{
+	if (a == NULL) return NULL;
+
+	if (strcmp(a->cmd, "STRING1") == 0 ||
+			strcmp(a->cmd, "STRING2") == 0 ||
+			strcmp(a->cmd, "STRING3") == 0 ||
+			strcmp(a->cmd, "STRING4") == 0 ||
+			strcmp(a->cmd, "STRING5") == 0) {
+		return FindCmd("STRING", 6);
+	}
+
+	if (strcmp(a->cmd, "SKIP") == 0) return NULL;
+
+	return a;
+}
+
+
+static bool CheckCommandsMatch(char *a, char *b, const char *name)
+{
+	ParsedCommandStruct templ;
+	ParsedCommandStruct lang;
+	int i,j;
+	bool result = true;
+
+	ExtractCommandString(&templ, b, true);
+	ExtractCommandString(&lang, a, true);
+
+	// For each string in templ, see if we find it in lang
+	if (templ.np != lang.np) {
+		warning("%s: template string and language string have a different # of commands", name);
+		result = false;
+	}
+
+	for (i = 0; i < templ.np; i++) {
+		// see if we find it in lang, and zero it out
+		bool found = false;
+		for (j = 0; j < lang.np; j++) {
+			if (templ.pairs[i].a == lang.pairs[j].a &&
+					strcmp(templ.pairs[i].v, lang.pairs[j].v) == 0) {
+				// it was found in both. zero it out from lang so we don't find it again
+				lang.pairs[j].a = NULL;
+				found = true;
+				break;
+			}
+		}
+
+		if (!found) {
+			warning("%s: command '%s' exists in template file but not in language file", name, templ.pairs[i].a->cmd);
+			result = false;
+		}
+	}
+
+	// if we reach here, all non consumer commands match up.
+	// Check if the non consumer commands match up also.
+	for (i = 0; i < lengthof(templ.cmd); i++) {
+		if (TranslateCmdForCompare(templ.cmd[i]) != TranslateCmdForCompare(lang.cmd[i])) {
+			warning("%s: Param idx #%d '%s' doesn't match with template command '%s'", name, i,
+				lang.cmd[i]  == NULL ? "<empty>" : lang.cmd[i]->cmd,
+				templ.cmd[i] == NULL ? "<empty>" : templ.cmd[i]->cmd);
+			result = false;
+		}
+	}
+
+	return result;
+}
+
+static void HandleString(char *str, bool master)
+{
+	char *s,*t;
+	LangString *ent;
+	char *casep;
+
+	if (*str == '#') {
+		if (str[1] == '#' && str[2] != '#') HandlePragma(str + 2);
+		return;
+	}
+
+	// Ignore comments & blank lines
+	if (*str == ';' || *str == ' ' || *str == '\0') return;
+
+	s = strchr(str, ':');
+	if (s == NULL) {
+		error("Line has no ':' delimiter");
+		return;
+	}
+
+	// Trim spaces.
+	// After this str points to the command name, and s points to the command contents
+	for (t = s; t > str && (t[-1] == ' ' || t[-1] == '\t'); t--);
+	*t = 0;
+	s++;
+
+	/* Check string is valid UTF-8 */
+	{
+		const char *tmp;
+		for (tmp = s; *tmp != '\0';) {
+			size_t len = Utf8Validate(tmp);
+			if (len == 0) fatal("Invalid UTF-8 sequence in '%s'", s);
+			tmp += len;
+		}
+	}
+
+	// Check if the string has a case..
+	// The syntax for cases is IDENTNAME.case
+	casep = strchr(str, '.');
+	if (casep) *casep++ = 0;
+
+	// Check if this string already exists..
+	ent = HashFind(str);
+
+	if (master) {
+		if (ent != NULL && casep == NULL) {
+			error("String name '%s' is used multiple times", str);
+			return;
+		}
+
+		if (ent == NULL && casep != NULL) {
+			error("Base string name '%s' doesn't exist yet. Define it before defining a case.", str);
+			return;
+		}
+
+		if (ent == NULL) {
+			if (_strings[_next_string_id]) {
+				error("String ID 0x%X for '%s' already in use by '%s'", ent, str, _strings[_next_string_id]->name);
+				return;
+			}
+
+			// Allocate a new LangString
+			ent = calloc(1, sizeof(*ent));
+			_strings[_next_string_id] = ent;
+			ent->index = _next_string_id++;
+			ent->name = strdup(str);
+			ent->line = _cur_line;
+
+			HashAdd(str, ent);
+		}
+
+		if (casep != NULL) {
+			Case* c = malloc(sizeof(*c));
+
+			c->caseidx = ResolveCaseName(casep, strlen(casep));
+			c->string = strdup(s);
+			c->next = ent->english_case;
+			ent->english_case = c;
+		} else {
+			ent->english = strdup(s);
+		}
+
+	} else {
+		if (ent == NULL) {
+			warning("String name '%s' does not exist in master file", str);
+			return;
+		}
+
+		if (ent->translated && casep == NULL) {
+			error("String name '%s' is used multiple times", str);
+			return;
+		}
+
+		if (s[0] == ':' && s[1] == '\0' && casep == NULL) {
+			// Special syntax :: means we should just inherit the master string
+			ent->translated = strdup(ent->english);
+		} else {
+			// make sure that the commands match
+			if (!CheckCommandsMatch(s, ent->english, str)) return;
+
+			if (casep != NULL) {
+				Case* c = malloc(sizeof(*c));
+
+				c->caseidx = ResolveCaseName(casep, strlen(casep));
+				c->string = strdup(s);
+				c->next = ent->translated_case;
+				ent->translated_case = c;
+			} else {
+				ent->translated = strdup(s);
+			}
+		}
+	}
+}
+
+
+static void rstrip(char *buf)
+{
+	int i = strlen(buf);
+	while (i > 0 && (buf[i - 1] == '\r' || buf[i - 1] == '\n' || buf[i - 1] == ' ')) i--;
+	buf[i] = '\0';
+}
+
+
+static void ParseFile(const char *file, bool english)
+{
+	FILE *in;
+	char buf[2048];
+
+	_file = file;
+
+	// For each new file we parse, reset the genders.
+	_numgenders = 0;
+	// TODO:!! We can't reset the cases. In case the translated strings
+	// derive some strings from english....
+
+
+	in = fopen(file, "r");
+	if (in == NULL) fatal("Cannot open file");
+	_cur_line = 1;
+	while (fgets(buf, sizeof(buf),in) != NULL) {
+		rstrip(buf);
+		HandleString(buf, english);
+		_cur_line++;
+	}
+	fclose(in);
+}
+
+
+static uint32 MyHashStr(uint32 hash, const char *s)
+{
+	for (; *s != '\0'; s++) {
+		hash = ROL(hash, 3) ^ *s;
+		hash = (hash & 1 ? hash >> 1 ^ 0xDEADBEEF : hash >> 1);
+	}
+	return hash;
+}
+
+
+// make a hash of the file to get a unique "version number"
+static void MakeHashOfStrings(void)
+{
+	uint32 hash = 0;
+	uint i;
+
+	for (i = 0; i != lengthof(_strings); i++) {
+		const LangString* ls = _strings[i];
+
+		if (ls != NULL) {
+			const CmdStruct* cs;
+			const char* s;
+			char buf[256];
+			int argno;
+			int casei;
+
+			s = ls->name;
+			hash ^= i * 0x717239;
+			hash = (hash & 1 ? hash >> 1 ^ 0xDEADBEEF : hash >> 1);
+			hash = MyHashStr(hash, s + 1);
+
+			s = ls->english;
+			while ((cs = ParseCommandString(&s, buf, &argno, &casei)) != NULL) {
+				if (cs->flags & C_DONTCOUNT) continue;
+
+				hash ^= (cs - _cmd_structs) * 0x1234567;
+				hash = (hash & 1 ? hash >> 1 ^ 0xF00BAA4 : hash >> 1);
+			}
+		}
+	}
+	_hash = hash;
+}
+
+
+static uint CountInUse(uint grp)
+{
+	int i;
+
+	for (i = 0x800; --i >= 0;) if (_strings[(grp << 11) + i] != NULL) break;
+	return i + 1;
+}
+
+
+bool CompareFiles(const char *n1, const char *n2)
+{
+	FILE *f1, *f2;
+	char b1[4096];
+	char b2[4096];
+	size_t l1, l2;
+
+	f2 = fopen(n2, "rb");
+	if (f2 == NULL) return false;
+
+	f1 = fopen(n1, "rb");
+	if (f1 == NULL) fatal("can't open %s", n1);
+
+	do {
+		l1 = fread(b1, 1, sizeof(b1), f1);
+		l2 = fread(b2, 1, sizeof(b2), f2);
+
+		if (l1 != l2 || memcmp(b1, b2, l1)) {
+			fclose(f2);
+			fclose(f1);
+			return false;
+		}
+	} while (l1);
+
+	fclose(f2);
+	fclose(f1);
+	return true;
+}
+
+
+static void WriteStringsH(const char *filename)
+{
+	FILE *out;
+	int i;
+	int next = -1;
+	int lastgrp;
+
+	out = fopen("tmp.xxx", "w");
+	if (out == NULL) fatal("can't open tmp.xxx");
+
+	fprintf(out, "enum {");
+
+	lastgrp = 0;
+
+	for (i = 0; i != lengthof(_strings); i++) {
+		if (_strings[i] != NULL) {
+			if (lastgrp != (i >> 11)) {
+				lastgrp = (i >> 11);
+				fprintf(out, "};\n\nenum {");
+			}
+
+			fprintf(out, next == i ? "\t%s,\n" : "\n\t%s = 0x%X,\n", _strings[i]->name, i);
+			next = i + 1;
+		}
+	}
+
+	fprintf(out, "};\n");
+
+	fprintf(out,
+		"\nenum {\n"
+		"\tLANGUAGE_PACK_IDENT = 0x474E414C, // Big Endian value for 'LANG' (LE is 0x 4C 41 4E 47)\n"
+		"\tLANGUAGE_PACK_VERSION = 0x%X,\n"
+		"};\n", (uint)_hash
+	);
+
+	fclose(out);
+
+	if (CompareFiles("tmp.xxx", filename)) {
+		// files are equal. tmp.xxx is not needed
+		unlink("tmp.xxx");
+	} else {
+		// else rename tmp.xxx into filename
+#if defined(WIN32) || defined(WIN64)
+		unlink(filename);
+#endif
+		if (rename("tmp.xxx", filename) == -1) fatal("rename() failed");
+	}
+}
+
+static int TranslateArgumentIdx(int argidx)
+{
+	int i, sum;
+
+	if (argidx < 0 || argidx >= lengthof(_cur_pcs.cmd))
+		fatal("invalid argidx %d", argidx);
+
+	for (i = sum = 0; i < argidx; i++) {
+		const CmdStruct *cs = _cur_pcs.cmd[i];
+		sum += (cs != NULL) ? cs->consumes : 1;
+	}
+
+	return sum;
+}
+
+static void PutArgidxCommand(void)
+{
+	PutUtf8(SCC_ARG_INDEX);
+	PutByte(TranslateArgumentIdx(_cur_argidx));
+}
+
+
+static void PutCommandString(const char *str)
+{
+	const CmdStruct *cs;
+	char param[256];
+	int argno;
+	int casei;
+
+	_cur_argidx = 0;
+
+	while (*str != '\0') {
+		// Process characters as they are until we encounter a {
+		if (*str != '{') {
+			PutByte(*str++);
+			continue;
+		}
+		cs = ParseCommandString(&str, param, &argno, &casei);
+		if (cs == NULL) break;
+
+		if (casei != -1) {
+			PutUtf8(SCC_SETCASE); // {SETCASE}
+			PutByte(casei);
+		}
+
+		// For params that consume values, we need to handle the argindex properly
+		if (cs->consumes > 0) {
+			// Check if we need to output a move-param command
+			if (argno != -1 && argno != _cur_argidx) {
+				_cur_argidx = argno;
+				PutArgidxCommand();
+			}
+
+			// Output the one from the master string... it's always accurate.
+			cs = _cur_pcs.cmd[_cur_argidx++];
+			if (cs == NULL) {
+				fatal("%s: No argument exists at position %d", _cur_ident, _cur_argidx - 1);
+			}
+		}
+
+		cs->proc(param, cs->value);
+	}
+}
+
+static void WriteLength(FILE *f, uint length)
+{
+	if (length < 0xC0) {
+		fputc(length, f);
+	} else if (length < 0x4000) {
+		fputc((length >> 8) | 0xC0, f);
+		fputc(length & 0xFF, f);
+	} else {
+		fatal("string too long");
+	}
+}
+
+
+static void WriteLangfile(const char *filename, int show_todo)
+{
+	FILE *f;
+	uint in_use[32];
+	LanguagePackHeader hdr;
+	uint i;
+	uint j;
+
+	f = fopen(filename, "wb");
+	if (f == NULL) fatal("can't open %s", filename);
+
+	memset(&hdr, 0, sizeof(hdr));
+	for (i = 0; i != 32; i++) {
+		uint n = CountInUse(i);
+
+		in_use[i] = n;
+		hdr.offsets[i] = TO_LE16(n);
+	}
+
+	// see line 655: fprintf(..."\tLANGUAGE_PACK_IDENT = 0x474E414C,...)
+	hdr.ident = TO_LE32(0x474E414C); // Big Endian value for 'LANG'
+	hdr.version = TO_LE32(_hash);
+	hdr.plural_form = _lang_pluralform;
+	strcpy(hdr.name, _lang_name);
+	strcpy(hdr.own_name, _lang_ownname);
+	strcpy(hdr.isocode, _lang_isocode);
+
+	fwrite(&hdr, sizeof(hdr), 1, f);
+
+	for (i = 0; i != 32; i++) {
+		for (j = 0; j != in_use[i]; j++) {
+			const LangString* ls = _strings[(i << 11) + j];
+			const Case* casep;
+			const char* cmdp;
+
+			// For undefined strings, just set that it's an empty string
+			if (ls == NULL) {
+				WriteLength(f, 0);
+				continue;
+			}
+
+			_cur_ident = ls->name;
+			_cur_line = ls->line;
+
+			// Produce a message if a string doesn't have a translation.
+			if (show_todo > 0 && ls->translated == NULL) {
+				if (show_todo == 2) {
+					warning("'%s' is untranslated", ls->name);
+				} else {
+					const char *s = "<TODO> ";
+					while (*s != '\0') PutByte(*s++);
+				}
+			}
+
+			// Extract the strings and stuff from the english command string
+			ExtractCommandString(&_cur_pcs, ls->english, false);
+
+			if (ls->translated_case != NULL || ls->translated != NULL) {
+				casep = ls->translated_case;
+				cmdp = ls->translated;
+			} else {
+				casep = ls->english_case;
+				cmdp = ls->english;
+			}
+
+			_translated = _masterlang || (cmdp != ls->english);
+
+			if (casep != NULL) {
+				const Case* c;
+				uint num;
+
+				// Need to output a case-switch.
+				// It has this format
+				// <0x9E> <NUM CASES> <CASE1> <LEN1> <STRING1> <CASE2> <LEN2> <STRING2> <CASE3> <LEN3> <STRING3> <STRINGDEFAULT>
+				// Each LEN is printed using 2 bytes in big endian order.
+				PutUtf8(SCC_SWITCH_CASE);
+				// Count the number of cases
+				for (num = 0, c = casep; c; c = c->next) num++;
+				PutByte(num);
+
+				// Write each case
+				for (c = casep; c != NULL; c = c->next) {
+					int pos;
+
+					PutByte(c->caseidx);
+					// Make some space for the 16-bit length
+					pos = _put_pos;
+					PutByte(0);
+					PutByte(0);
+					// Write string
+					PutCommandString(c->string);
+					PutByte(0); // terminate with a zero
+					// Fill in the length
+					_put_buf[pos + 0] = GB(_put_pos - (pos + 2), 8, 8);
+					_put_buf[pos + 1] = GB(_put_pos - (pos + 2), 0, 8);
+				}
+			}
+
+			if (cmdp != NULL) PutCommandString(cmdp);
+
+			WriteLength(f, _put_pos);
+			fwrite(_put_buf, 1, _put_pos, f);
+			_put_pos = 0;
+		}
+	}
+
+	fputc(0, f);
+	fclose(f);
+}
+
+/** Multi-OS mkdirectory function */
+static inline void ottd_mkdir(const char *directory)
+{
+#if defined(WIN32) || defined(__WATCOMC__)
+		mkdir(directory);
+#else
+		mkdir(directory, 0755);
+#endif
+}
+
+/** Create a path consisting of an already existing path, a possible
+ * path seperator and the filename. The seperator is only appended if the path
+ * does not already end with a seperator */
+static inline char *mkpath(char *buf, size_t buflen, const char *path, const char *file)
+{
+	char *p;
+	ttd_strlcpy(buf, path, buflen); // copy directory into buffer
+
+	p = strchr(buf, '\0'); // add path seperator if necessary
+	if (p[-1] != PATHSEPCHAR && (size_t)(p - buf) + 1 < buflen) *p++ = PATHSEPCHAR;
+	ttd_strlcpy(p, file, buflen - (size_t)(p - buf)); // catenate filename at end of buffer
+	return buf;
+}
+
+#if defined(__MINGW32__) || defined(__CYGWIN__)
+/**
+ * On MingW, it is common that both / as \ are accepted in the
+ * params. To go with those flow, we rewrite all incoming /
+ * simply to \, so internally we can safely assume \.
+ */
+static inline char *replace_pathsep(char *s)
+{
+	char *c;
+
+	for (c = s; *c != '\0'; c++) if (*c == '/') *c = '\\';
+	return s;
+}
+#else
+static inline char *replace_pathsep(char *s) { return s; }
+#endif
+
+int CDECL main(int argc, char* argv[])
+{
+	char pathbuf[256];
+	const char *src_dir = ".";
+	const char *dest_dir = NULL;
+
+	int show_todo = 0;
+
+	while (argc > 1 && *argv[1] == '-') {
+		if (strcmp(argv[1], "-v") == 0 || strcmp(argv[1], "--version") == 0) {
+			puts("$Revision$");
+			return 0;
+		}
+
+		if (strcmp(argv[1], "-t") == 0 || strcmp(argv[1], "--todo") == 0) {
+			show_todo = 1;
+			argc--, argv++;
+			continue;
+		}
+
+		if (strcmp(argv[1], "-w") == 0 || strcmp(argv[1], "--warning") == 0) {
+			show_todo = 2;
+			argc--, argv++;
+			continue;
+		}
+
+		if (strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0 || strcmp(argv[1], "-?") == 0) {
+			puts(
+				"strgen - $Revision$\n"
+				" -v | --version    print version information and exit\n"
+				" -t | --todo       replace any untranslated strings with '<TODO>'\n"
+				" -w | --warning    print a warning for any untranslated strings\n"
+				" -h | -? | --help  print this help message and exit\n"
+				" -s | --source_dir search for english.txt in the specified directory\n"
+				" -d | --dest_dir   put output file in the specified directory, create if needed\n"
+				" Run without parameters and strgen will search for english.txt and parse it,\n"
+				" creating strings.h. Passing an argument, strgen will translate that language\n"
+				" file using english.txt as a reference and output <language>.lng."
+			);
+			return 0;
+		}
+
+		if (argc > 2 && (strcmp(argv[1], "-s") == 0 || strcmp(argv[1], "--source_dir") == 0)) {
+			src_dir = replace_pathsep(argv[2]);
+			argc -= 2, argv += 2;
+			continue;
+		}
+
+		if (argc > 2 && (strcmp(argv[1], "-d") == 0 || strcmp(argv[1], "--dest_dir") == 0)) {
+			dest_dir = replace_pathsep(argv[2]);
+			argc -= 2, argv += 2;
+			continue;
+		}
+
+		fprintf(stderr, "Invalid arguments\n");
+		return 0;
+	}
+
+	if (dest_dir == NULL) dest_dir = src_dir; // if dest_dir is not specified, it equals src_dir
+
+	/* strgen has two modes of operation. If no (free) arguments are passed
+	 * strgen generates strings.h to the destination directory. If it is supplied
+	 * with a (free) parameter the program will translate that language to destination
+	 * directory. As input english.txt is parsed from the source directory */
+	if (argc == 1) {
+		mkpath(pathbuf, lengthof(pathbuf), src_dir, "english.txt");
+
+		/* parse master file */
+		_masterlang = true;
+		ParseFile(pathbuf, true);
+		MakeHashOfStrings();
+		if (_errors) return 1;
+
+		/* write strings.h */
+		ottd_mkdir(dest_dir);
+		mkpath(pathbuf, lengthof(pathbuf), dest_dir, "strings.h");
+		WriteStringsH(pathbuf);
+	} else if (argc == 2) {
+		char *r;
+
+		mkpath(pathbuf, lengthof(pathbuf), src_dir, "english.txt");
+
+		/* parse master file and check if target file is correct */
+		_masterlang = false;
+		ParseFile(pathbuf, true);
+		MakeHashOfStrings();
+		ParseFile(replace_pathsep(argv[1]), false); // target file
+		if (_errors) return 1;
+
+		/* get the targetfile, strip any directories and append to destination path */
+		r = strrchr(argv[1], PATHSEPCHAR);
+		mkpath(pathbuf, lengthof(pathbuf), dest_dir, (r != NULL) ? &r[1] : argv[1]);
+
+		/* rename the .txt (input-extension) to .lng */
+		r = strrchr(pathbuf, '.');
+		if (r == NULL || strcmp(r, ".txt") != 0) r = strchr(pathbuf, '\0');
+		ttd_strlcpy(r, ".lng", (size_t)(r - pathbuf));
+		WriteLangfile(pathbuf, show_todo);
+
+		/* if showing warnings, print a summary of the language */
+		if (show_todo == 2) {
+			fprintf(stdout, "%d warnings and %d errors for %s\n", _warnings, _errors, pathbuf);
+		}
+	} else {
+		fprintf(stderr, "Invalid arguments\n");
+	}
+
+	return 0;
+}