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-rw-r--r--src/misc/getoptdata.cpp99
-rw-r--r--src/misc/getoptdata.h83
-rw-r--r--src/openttd.cpp75
3 files changed, 188 insertions, 69 deletions
diff --git a/src/misc/getoptdata.cpp b/src/misc/getoptdata.cpp
index 9ec76d9fc..818e90c17 100644
--- a/src/misc/getoptdata.cpp
+++ b/src/misc/getoptdata.cpp
@@ -16,56 +16,75 @@
* Find the next option.
* @return Function returns one
* - An option letter if it found another option.
- * - -1 if option processing is finished.
+ * - -1 if option processing is finished. Inspect #argv and #numleft to find the command line arguments.
* - -2 if an error was encountered.
*/
int GetOptData::GetOpt()
{
+ const OptionData *odata;
+
char *s = this->cont;
- if (s != NULL) {
- goto md_continue_here;
+ if (s == NULL) {
+ if (this->numleft == 0) return -1; // No arguments left -> finished.
+
+ s = this->argv[0];
+ if (*s != '-') return -1; // No leading '-' -> not an option -> finished.
+
+ this->argv++;
+ this->numleft--;
+
+ /* Is it a long option? */
+ for (odata = this->options; odata->flags != ODF_END; odata++) {
+ if (odata->longname != NULL && !strcmp(odata->longname, s)) { // Long options always use the entire argument.
+ this->cont = NULL;
+ goto set_optval;
+ }
+ }
+
+ s++; // Skip leading '-'.
}
- for (;;) {
- if (--this->numleft < 0) return -1;
-
- s = *this->argv++;
- if (*s == '-') {
-md_continue_here:;
- s++;
- if (*s != 0) {
- const char *r;
- /* Found argument, try to locate it in options. */
- if (*s == ':' || (r = strchr(this->options, *s)) == NULL) {
- /* ERROR! */
- return -2;
- }
- if (r[1] == ':') {
- char *t;
- /* Item wants an argument. Check if the argument follows, or if it comes as a separate arg. */
- if (!*(t = s + 1)) {
- /* It comes as a separate arg. Check if out of args? */
- if (--this->numleft < 0 || *(t = *this->argv) == '-') {
- /* Check if item is optional? */
- if (r[2] != ':') return -2;
- this->numleft++;
- t = NULL;
- } else {
- this->argv++;
- }
+ /* Is it a short option? */
+ for (odata = this->options; odata->flags != ODF_END; odata++) {
+ if (odata->shortname != '\0' && *s == odata->shortname) {
+ this->cont = (s[1] != '\0') ? s + 1 : NULL;
+
+set_optval: // Handle option value of *odata .
+ this->opt = NULL;
+ switch (odata->flags) {
+ case ODF_NO_VALUE:
+ return odata->id;
+
+ case ODF_HAS_VALUE:
+ if (this->cont != NULL) { // Remainder of the argument is the option value.
+ this->opt = this->cont;
+ this->cont = NULL;
+ return odata->id;
+ }
+ if (this->numleft == 0) return -2; // Missing the option value.
+ this->opt = this->argv[0];
+ this->argv++;
+ this->numleft--;
+ return odata->id;
+
+ case ODF_OPTIONAL_VALUE:
+ if (this->cont != NULL) { // Remainder of the argument is the option value.
+ this->opt = this->cont;
+ this->cont = NULL;
+ return odata->id;
}
- this->opt = t;
- this->cont = NULL;
- return *s;
- }
- this->opt = NULL;
- this->cont = s;
- return *s;
+ if (this->numleft > 0 && this->argv[0][0] != '-') {
+ this->opt = this->argv[0];
+ this->argv++;
+ this->numleft--;
+ }
+ return odata->id;
+
+ default: NOT_REACHED();
}
- } else {
- /* This is currently not supported. */
- return -2;
}
}
+
+ return -2; // No other ways to interpret the text -> error.
}
diff --git a/src/misc/getoptdata.h b/src/misc/getoptdata.h
index c3a204494..5982f01fb 100644
--- a/src/misc/getoptdata.h
+++ b/src/misc/getoptdata.h
@@ -12,13 +12,29 @@
#ifndef GETOPTDATA_H
#define GETOPTDATA_H
+/** Flags of an option. */
+enum OptionDataFlags {
+ ODF_NO_VALUE, ///< A plain option (no value attached to it).
+ ODF_HAS_VALUE, ///< An option with a value.
+ ODF_OPTIONAL_VALUE, ///< An option with an optional value.
+ ODF_END, ///< Terminator (data is not parsed further).
+};
+
+/** Data of an option. */
+struct OptionData {
+ byte id; ///< Unique identification of this option data, often the same as #shortname.
+ char shortname; ///< Short option letter if available, else use \c '\0'.
+ uint16 flags; ///< Option data flags. @see OptionDataFlags
+ const char *longname; ///< Long option name including '-'/'--' prefix, use \c NULL if not available.
+};
+
/** Data storage for parsing command line options. */
struct GetOptData {
- char *opt; ///< Option value, if available (else \c NULL).
- int numleft; ///< Number of arguments left in #argv.
- char **argv; ///< Remaining command line arguments.
- const char *options; ///< Command line option descriptions.
- char *cont; ///< Next call to #MyGetOpt should start here (in the middle of an argument).
+ char *opt; ///< Option value, if available (else \c NULL).
+ int numleft; ///< Number of arguments left in #argv.
+ char **argv; ///< Remaining command line arguments.
+ const OptionData *options; ///< Command line option descriptions.
+ char *cont; ///< Next call to #MyGetOpt should start here (in the middle of an argument).
/**
* Constructor of the data store.
@@ -26,7 +42,7 @@ struct GetOptData {
* @param argv Command line arguments, excluding the program name.
* @param options Command line option descriptions.
*/
- GetOptData(int argc, char **argv, const char *options) :
+ GetOptData(int argc, char **argv, const OptionData *options) :
opt(NULL),
numleft(argc),
argv(argv),
@@ -38,4 +54,59 @@ struct GetOptData {
int GetOpt();
};
+/**
+ * General macro for creating an option.
+ * @param id Identification of the option.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ * @param longname Long option name including leading '-' or '--'. Use \c NULL if not used.
+ * @param flags Flags of the option.
+ */
+#define GETOPT_GENERAL(id, shortname, longname, flags) { id, shortname, flags, longname }
+
+/**
+ * Short option without value.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ * @param longname Long option name including leading '-' or '--'. Use \c NULL if not used.
+ */
+#define GETOPT_NOVAL(shortname, longname) GETOPT_GENERAL(shortname, shortname, longname, ODF_NO_VALUE)
+
+/**
+ * Short option with value.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ * @param longname Long option name including leading '-' or '--'. Use \c NULL if not used.
+ */
+#define GETOPT_VALUE(shortname, longname) GETOPT_GENERAL(shortname, shortname, longname, ODF_HAS_VALUE)
+
+/**
+ * Short option with optional value.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ * @param longname Long option name including leading '-' or '--'. Use \c NULL if not used.
+ * @note Options with optional values are hopelessly ambiguous, eg "-opt -value", avoid them.
+ */
+#define GETOPT_OPTVAL(shortname, longname) GETOPT_GENERAL(shortname, shortname, longname, ODF_OPTIONAL_VALUE)
+
+
+/**
+ * Short option without value.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ */
+#define GETOPT_SHORT_NOVAL(shortname) GETOPT_NOVAL(shortname, NULL)
+
+/**
+ * Short option with value.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ */
+#define GETOPT_SHORT_VALUE(shortname) GETOPT_VALUE(shortname, NULL)
+
+/**
+ * Short option with optional value.
+ * @param shortname Short option name. Use \c '\0' if not used.
+ * @note Options with optional values are hopelessly ambiguous, eg "-opt -value", avoid them.
+ */
+#define GETOPT_SHORT_OPTVAL(shortname) GETOPT_OPTVAL(shortname, NULL)
+
+/** Option terminator. */
+#define GETOPT_END() { '\0', '\0', ODF_END, NULL}
+
+
#endif /* GETOPTDATA_H */
diff --git a/src/openttd.cpp b/src/openttd.cpp
index f331aab7a..c95657d20 100644
--- a/src/openttd.cpp
+++ b/src/openttd.cpp
@@ -342,10 +342,41 @@ void MakeNewgameSettingsLive()
extern void DedicatedFork();
#endif
+/** Options of OpenTTD. */
+static const OptionData _options[] = {
+ GETOPT_SHORT_VALUE('I'),
+ GETOPT_SHORT_VALUE('S'),
+ GETOPT_SHORT_VALUE('M'),
+ GETOPT_SHORT_VALUE('m'),
+ GETOPT_SHORT_VALUE('s'),
+ GETOPT_SHORT_VALUE('v'),
+ GETOPT_SHORT_VALUE('b'),
+#if defined(ENABLE_NETWORK)
+ GETOPT_SHORT_OPTVAL('D'),
+ GETOPT_SHORT_OPTVAL('n'),
+ GETOPT_SHORT_VALUE('l'),
+ GETOPT_SHORT_VALUE('p'),
+ GETOPT_SHORT_VALUE('P'),
+#if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(WIN32)
+ GETOPT_SHORT_NOVAL('f'),
+#endif
+#endif /* ENABLE_NETWORK */
+ GETOPT_SHORT_VALUE('r'),
+ GETOPT_SHORT_VALUE('t'),
+ GETOPT_SHORT_OPTVAL('d'),
+ GETOPT_SHORT_NOVAL('e'),
+ GETOPT_SHORT_OPTVAL('i'),
+ GETOPT_SHORT_OPTVAL('g'),
+ GETOPT_SHORT_VALUE('G'),
+ GETOPT_SHORT_VALUE('c'),
+ GETOPT_SHORT_NOVAL('x'),
+ GETOPT_SHORT_NOVAL('h'),
+ GETOPT_END()
+};
+
+
int ttd_main(int argc, char *argv[])
{
- int i;
- const char *optformat;
char *musicdriver = NULL;
char *sounddriver = NULL;
char *videodriver = NULL;
@@ -376,18 +407,9 @@ int ttd_main(int argc, char *argv[])
_switch_mode_errorstr = INVALID_STRING_ID;
_config_file = NULL;
- /* The last param of the following function means this:
- * a letter means: it accepts that param (e.g.: -h)
- * a ':' behind it means: it need a param (e.g.: -m<driver>)
- * a '::' behind it means: it can optional have a param (e.g.: -d<debug>) */
- optformat = "m:s:v:b:hD::n::ei::I:S:M:t:d::r:g::G:c:xl:p:P:"
-#if !defined(__MORPHOS__) && !defined(__AMIGA__) && !defined(WIN32)
- "f"
-#endif
- ;
-
- GetOptData mgo(argc - 1, argv + 1, optformat);
+ GetOptData mgo(argc - 1, argv + 1, _options);
+ int i;
while ((i = mgo.GetOpt()) != -1) {
switch (i) {
case 'I': free(graphics_set); graphics_set = strdup(mgo.opt); break;
@@ -476,18 +498,25 @@ int ttd_main(int argc, char *argv[])
case 'G': generation_seed = atoi(mgo.opt); break;
case 'c': _config_file = strdup(mgo.opt); break;
case 'x': save_config = false; break;
- case -2:
case 'h':
- /* The next two functions are needed to list the graphics sets.
- * We can't do them earlier because then we can't show it on
- * the debug console as that hasn't been configured yet. */
- DeterminePaths(argv[0]);
- BaseGraphics::FindSets();
- BaseSounds::FindSets();
- BaseMusic::FindSets();
- ShowHelp();
- return 0;
+ i = -2; // Force printing of help.
+ break;
}
+ if (i == -2) break;
+ }
+
+ if (i == -2 || mgo.numleft > 0) {
+ /* Either the user typed '-h', he made an error, or he added unrecognized command line arguments.
+ * In all cases, print the help, and exit.
+ *
+ * The next two functions are needed to list the graphics sets. We can't do them earlier
+ * because then we cannot show it on the debug console as that hasn't been configured yet. */
+ DeterminePaths(argv[0]);
+ BaseGraphics::FindSets();
+ BaseSounds::FindSets();
+ BaseMusic::FindSets();
+ ShowHelp();
+ return 0;
}
#if defined(WINCE) && defined(_DEBUG)
generated by cgit v1.2.3-54-g00ecf (git 2.44.0) at 2024-06-28 02:48:11 +0000