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https://git.zap.org.au/git/trader.git
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Move function comments to start of file; remove unneeded parentheses
This commit is contained in:
John Zaitseff
parent
8725983d94
commit
fe65657eda
177
src/trader.c
177
src/trader.c
@ -13,7 +13,8 @@
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of the game is to create companies, buy and sell shares, borrow and
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repay money, in order to become the wealthiest player (the winner).
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This file, trader.c, contains the main program for Star Traders.
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This file, trader.c, contains the main program and command-line
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interface for Star Traders.
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This program is free software: you can redistribute it and/or modify it
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@ -35,16 +36,103 @@
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/************************************************************************
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* Internal function declarations *
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* Module-specific constant definitions *
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************************************************************************/
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// Constants for command line options
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enum options_char {
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OPTION_NO_COLOR = 1,
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};
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static const char options_short[] = "hV";
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// -h, --help
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// -V, --version
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static struct option const options_long[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'V' },
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{ "no-color", no_argument, NULL, OPTION_NO_COLOR },
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{ "no-colour", no_argument, NULL, OPTION_NO_COLOR },
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{ NULL, 0, NULL, 0 }
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};
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/************************************************************************
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* Module-specific function prototypes *
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************************************************************************/
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/*
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Function: main - Main program implementing Star Traders
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Parameters: argc - Command-line argument count
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argv - Command-line argument vector
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Returns: int - Operating system return code: 0 if all well, 1 if not.
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The main() function is, of course, where all the action starts in a C
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program. This function contains the main game loop, a series of game
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functions that are called in sequence.
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*/
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int main (int argc, char *argv[]);
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/*
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Function: process_cmdline - Process command line arguments
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Parameters: argc - Same as passed to main()
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argv - Same as passed to main()
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Returns: (nothing)
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This function processes the command line arguments passed through argc
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and argv. If required, it shows the program version number and/or
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command-line help. It also sets global variables starting with option_
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to appropriate values.
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*/
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void process_cmdline (int argc, char *argv[]);
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/*
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Function: show_version - Show program version information
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Parameters: (none)
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Returns: (does not return)
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This function displays version information about this program, then
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terminates with exit code EXIT_SUCCESS.
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*/
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void show_version (void) __attribute__((noreturn));
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/*
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Function: show_usage - Show command line usage information
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Parameters: status - Exit status
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Returns: (does not return)
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This function displays usage information for this program. If status
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is zero, a detailed explanation is sent to stdout; otherwise, a brief
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message is sent to stderr. It exits to the operating system with
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status as the exit code.
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*/
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void show_usage (int status) __attribute__((noreturn));
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/*
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Function: init_program - Initialise program-wide functions
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Parameters: (none)
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Returns: (nothing)
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This function initialises the terminal display, internal low-level
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routines, etc. It should be called before the game starts.
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*/
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void init_program (void);
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/*
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Function: end_program - Deinitialise program-wide functions
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Parameters: (none)
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Returns: (nothing)
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This function finalises the terminal display, internal low-level
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routines, etc. It should be the last function called in the ordinary
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course of program execution.
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*/
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void end_program (void);
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@ -54,11 +142,13 @@ void end_program (void);
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int main (int argc, char *argv[])
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{
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// Strip off leading pathname components from program name
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init_program_name(argv);
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// Initialise the locale
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if (setlocale(LC_ALL, "") == NULL) {
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err_exit("could not set locale (check LANG, LC_ALL and LANGUAGE in environment)");
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err_exit("could not set locale "
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"(check LANG, LC_ALL and LANGUAGE in environment)");
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}
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// Process command line arguments
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@ -90,36 +180,10 @@ int main (int argc, char *argv[])
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* Command line processing *
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************************************************************************/
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/* Constants for command line options */
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enum options_char {
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OPTION_NO_COLOR = 1,
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};
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static const char options_short[] = "hV";
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/* -h --help
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-V --version
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*/
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static struct option const options_long[] = {
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{ "help", no_argument, NULL, 'h' },
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{ "version", no_argument, NULL, 'V' },
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{ "no-color", no_argument, NULL, OPTION_NO_COLOR },
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{ "no-colour", no_argument, NULL, OPTION_NO_COLOR },
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{ NULL, 0, NULL, 0 }
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};
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// These functions are documented at the start of this file
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/*-----------------------------------------------------------------------
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Function: process_cmdline - Process command line arguments
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Arguments: argc - Same as passed to main()
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argv - Same as passed to main()
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Returns: (nothing)
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This function processes the command line arguments passed through argc
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and argv, setting global variables as appropriate.
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*/
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/***********************************************************************/
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void process_cmdline (int argc, char *argv[])
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{
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int c;
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@ -154,15 +218,15 @@ void process_cmdline (int argc, char *argv[])
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// Process remaining arguments
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if ((optind < argc) && (argv[optind] != NULL)) {
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if (argv[optind][0] == '-') {
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if (optind < argc && argv[optind] != NULL) {
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if (*argv[optind] == '-') {
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fprintf(stderr, "%s: invalid operand `%s'\n", program_name(),
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argv[optind]);
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show_usage(EXIT_FAILURE);
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}
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if ((strlen(argv[optind]) == 1) &&
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(*argv[optind] >= '1') && (*argv[optind] <= '9')) {
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if (strlen(argv[optind]) == 1
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&& *argv[optind] >= '1' && *argv[optind] <= '9') {
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game_num = *argv[optind] - '0';
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} else {
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fprintf(stderr, "%s: invalid game number `%s'\n",
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@ -173,7 +237,7 @@ void process_cmdline (int argc, char *argv[])
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optind++;
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}
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if ((optind < argc) && (argv[optind] != NULL)) {
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if (optind < argc && argv[optind] != NULL) {
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fprintf(stderr, "%s: extra operand `%s'\n", program_name(),
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argv[optind]);
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show_usage(EXIT_FAILURE);
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@ -181,15 +245,7 @@ void process_cmdline (int argc, char *argv[])
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}
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/*-----------------------------------------------------------------------
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Function: show_version - Show program version information
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Arguments: (none)
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Returns: (nothing)
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This function displays version information about this program, then
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terminates.
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*/
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/***********************************************************************/
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void show_version (void)
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{
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printf("\
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@ -210,19 +266,12 @@ NO WARRANTY, to the extent permitted by law; see the License for details.\n\
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}
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/*-----------------------------------------------------------------------
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Function: show_usage - Show command line usage information
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Arguments: status - Exit status
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Returns: (nothing)
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This function displays usage information to standard output or standard
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error, then terminates.
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*/
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/***********************************************************************/
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void show_usage (int status)
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{
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const char *pn = program_name();
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if (status != EXIT_SUCCESS) {
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fprintf(stderr, "%s: Try `%s --help' for more information.\n",
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pn, pn);
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@ -263,16 +312,10 @@ playing that game. If GAME is not specified, start a new game.\n\n\
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* Initialisation and deinitialisation function definitions *
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************************************************************************/
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// These functions are documented at the start of this file
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/*-----------------------------------------------------------------------
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Function: init_program - Initialise program-wide functions
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Arguments: (none)
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Returns: (nothing)
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This function initialises the terminal display, internal low-level
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routines, etc.
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*/
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/***********************************************************************/
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void init_program (void)
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{
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// Initialise the random number generator
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@ -286,15 +329,7 @@ void init_program (void)
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}
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/*-----------------------------------------------------------------------
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Function: end_program - Deinitialise program-wide functions
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Arguments: (none)
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Returns: (nothing)
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This function finalises the terminal display, internal low-level
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routines, etc.
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*/
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/***********************************************************************/
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void end_program (void)
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{
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end_screen();
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