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annotate util.h @ 1384:1df16f5985f3

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Added stub load_save and persist_save functions to SMS system so that we don't crash when switching games via the menu
author Michael Pavone <pavone@retrodev.com>
date Wed, 31 May 2017 09:45:37 -0700
parents 5ceb316c479a
children e2bd03ed3190
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39cad98d2789 Allow OpenGL support to be disabled at compile time. Move generic utility functions out of config.c
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1 #ifndef UTIL_H_
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2 #define UTIL_H_
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3
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4 #include <stdio.h>
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5 #include <time.h>
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6 #include "tern.h"
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7
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8 typedef struct {
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9 char *name;
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10 uint8_t is_dir;
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11 } dir_entry;
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12
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13 #ifdef _WIN32
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14 #define PATH_SEP "\\"
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15 #else
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16 #define PATH_SEP "/"
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17 #endif
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18
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19 //Utility functions
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20
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21 //Allocates a new string containing the concatenation of first and second
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22 char * alloc_concat(char const * first, char const * second);
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23 //Allocates a new string containing the concatenation of the strings pointed to by parts
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24 char * alloc_concat_m(int num_parts, char const ** parts);
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25 //Returns a newly allocated string in which all variables in based are replaced with values from vars or the environment
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26 char *replace_vars(char *base, tern_node *vars, uint8_t allow_env);
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27 //Byteswaps a ROM image in memory
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28 void byteswap_rom(int filesize, uint16_t *cart);
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29 //Returns the size of a file using fseek and ftell
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30 long file_size(FILE * f);
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31 //Strips whitespace and non-printable characters from the beginning and end of a string
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32 char * strip_ws(char * text);
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33 //Inserts a null after the first word, returns a pointer to the second word
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34 char * split_keyval(char * text);
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35 //Takes a binary byte buffer and produces a lowercase hex string
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36 void bin_to_hex(uint8_t *output, uint8_t *input, uint64_t size);
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37 //Determines whether a character is a valid path separator for the current platform
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38 char is_path_sep(char c);
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39 //Determines whether a path is considered an absolute path on the current platform
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40 char is_absolute_path(char *path);
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41 //Returns the basename of a path with th extension (if any) stripped
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42 char * basename_no_extension(char *path);
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43 //Returns the extension from a path or NULL if there is no extension
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44 char *path_extension(char *path);
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45 //Gets the smallest power of two that is >= a certain value, won't work for values > 0x80000000
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46 uint32_t nearest_pow2(uint32_t val);
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47 //Should be called by main with the value of argv[0] for use by get_exe_dir
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48 void set_exe_str(char * str);
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49 //Returns the directory the executable is in
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50 char * get_exe_dir();
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51 //Returns the user's home directory
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52 char * get_home_dir();
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53 //Returns an appropriate path for storing config files
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54 char const *get_config_dir();
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55 //Returns an appropriate path for saving non-config data like savestates
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56 char const *get_userdata_dir();
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57 //Reads a file bundled with the executable
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58 char *read_bundled_file(char *name, uint32_t *sizeret);
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59 //Retunrs an array of normal files and directories residing in a directory
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60 dir_entry *get_dir_list(char *path, size_t *numret);
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61 //Frees a dir list returned by get_dir_list
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62 void free_dir_list(dir_entry *list, size_t numentries);
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63 //Gets the modification time of a file
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64 time_t get_modification_time(char *path);
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65 //Recusrively creates a directory if it does not exist
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66 int ensure_dir_exists(char *path);
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67 //Returns the contents of a symlink in a newly allocated string
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68 char * readlink_alloc(char * path);
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69 //Prints an error message to stderr and to a message box if not in headless mode and then exits
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70 void fatal_error(char *format, ...);
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71 //Prints an information message to stdout and to a message box if not in headless mode and not attached to a console
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72 void info_message(char *format, ...);
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73 //Prints an information message to stderr and to a message box if not in headless mode and not attached to a console
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74 void warning(char *format, ...);
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76 #endif //UTIL_H_