asar coverage - build #69

src/asar/
File: src/asar/platform/linux/file-helpers-linux.cpp
Date: 2024-01-17 04:38:17
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1 #include "platform/file-helpers.h"
2 #include <sys/stat.h>
3 #include <errno.h>
4
5 1052 bool file_exists(const char * filename)
6 {
7 struct stat st;
8 1052 return (!stat(filename, &st));
9 }
10
11 2288 bool path_is_absolute(const char* path)
12 {
13 2288 return ('/' == path[0]);
14 }
15
16 16 char get_native_path_separator()
17 {
18 16 return '/';
19 }
20
21 258 bool check_is_regular_file(const char* path)
22 {
23 struct stat finfo;
24
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 258 if (stat(path, &finfo) == 0)
25 {
26 // either regular file or symlink
27
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 258 if (finfo.st_mode & (S_IFREG | S_IFLNK))
28 252 return true;
29 }
30 return false;
31 }
32
33
34 686 FileHandleType open_file(const char* path, FileOpenMode mode, FileOpenError* error)
35 {
36 FILE* out_handle = NULL;
37 const char* open_mode;
38
39
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 686 switch (mode)
40 {
41 115 case FileOpenMode_ReadWrite:
42 open_mode = "r+b";
43 115 break;
44 482 case FileOpenMode_Read:
45 open_mode = "rb";
46 482 break;
47 89 case FileOpenMode_Write:
48 open_mode = "wb";
49 89 break;
50 }
51
52 686 out_handle = fopen(path, open_mode);
53
54
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 686 if (error != NULL)
55 {
56
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 252 if (out_handle != NULL)
57 {
58 252 *error = FileOpenError_None;
59 }
60 else
61 {
62 ✗ int fopen_error = errno;
63
64 ✗ switch (fopen_error)
65 {
66 ✗ case ENOENT:
67 ✗ *error = FileOpenError_NotFound;
68 ✗ break;
69 ✗ case EACCES:
70 ✗ *error = FileOpenError_AccessDenied;
71 ✗ break;
72 ✗ default:
73 ✗ *error = FileOpenError_Unknown;
74 ✗ break;
75 }
76 }
77 }
78
79 686 return out_handle;
80 }
81
82 686 void close_file(FileHandleType handle)
83 {
84
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 686 if (handle == InvalidFileHandle) return;
85
86 686 fclose(handle);
87 }
88
89 597 uint64_t get_file_size(FileHandleType handle)
90 {
91
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 597 if (handle == InvalidFileHandle) return 0u;
92
93 597 long int f_pos = ftell(handle);
94 597 fseek(handle, 0, SEEK_END);
95 597 long int f_size = ftell(handle);
96 597 fseek(handle, f_pos, SEEK_SET);
97
98 597 return (uint64_t)f_size;
99 }
100
101 452 void set_file_pos(FileHandleType handle, uint64_t pos)
102 {
103
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 452 if (handle == InvalidFileHandle) return;
104
105 // TODO: Some error handling would be wise here.
106
107 452 fseek(handle, pos, SEEK_SET);
108 }
109
110 604 uint32_t read_file(FileHandleType handle, void* buffer, uint32_t num_bytes)
111 {
112
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 604 if (handle == InvalidFileHandle) return 0u;
113
114 // TODO: Some error handling would be wise here.
115
116 604 return (uint32_t)fread(buffer, 1, num_bytes, handle);
117 }
118
119 78 uint32_t write_file(FileHandleType handle, const void* buffer, uint32_t num_bytes)
120 {
121
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 78 if (handle == InvalidFileHandle) return 0u;
122
123 // TODO: Some error handling would be wise here.
124
125 78 return (uint32_t)fwrite(buffer, 1, num_bytes, handle);
126 }
127