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author3gg <3gg@shellblade.net>2024-06-15 11:42:48 -0700
committer3gg <3gg@shellblade.net>2024-06-15 11:42:48 -0700
commit04e3ded4c28c0b559620609daaae7b939d776b61 (patch)
tree55efea02bee351ac01ef764a04105ee9cee69259 /filesystem/src/filesystem.c
parent993424547df0d253d546dbe7adee9b2448294b08 (diff)
Add path.
Diffstat (limited to 'filesystem/src/filesystem.c')
-rw-r--r--filesystem/src/filesystem.c40
1 files changed, 1 insertions, 39 deletions
diff --git a/filesystem/src/filesystem.c b/filesystem/src/filesystem.c
index f6bb693..b228e85 100644
--- a/filesystem/src/filesystem.c
+++ b/filesystem/src/filesystem.c
@@ -1,6 +1,7 @@
1#include <filesystem.h> 1#include <filesystem.h>
2 2
3#include <assert.h> 3#include <assert.h>
4#include <stdio.h>
4#include <stdlib.h> 5#include <stdlib.h>
5#include <string.h> 6#include <string.h>
6 7
@@ -54,42 +55,3 @@ cleanup:
54 } 55 }
55 return 0; 56 return 0;
56} 57}
57
58bool make_relative_path(
59 const char* filepath, const char* path, char* relative,
60 size_t relative_length) {
61 assert(filepath);
62 assert(path);
63 assert(relative);
64
65 const size_t filepath_len = strlen(filepath);
66 const size_t path_len = strlen(path);
67 assert(filepath_len < relative_length);
68 assert(path_len < relative_length);
69
70 // Handle empty filepath.
71 if (filepath_len == 0) {
72 memcpy(relative, path, path_len);
73 return true;
74 }
75
76 // Search for the last / in the file path to get its parent directory.
77 assert(filepath_len > 0);
78 size_t tm_dir_len = 0;
79 for (tm_dir_len = strlen(filepath) - 1; tm_dir_len > 0; --tm_dir_len) {
80 if (filepath[tm_dir_len] == '/') {
81 break;
82 }
83 }
84 tm_dir_len++; // Preserve the backslash.
85
86 // Copy the file path where the parent dir ends.
87 // Make sure there is enough space in the output.
88 if ((tm_dir_len + path_len + 1) >= relative_length) {
89 return false;
90 }
91 memcpy(relative, filepath, tm_dir_len);
92 memcpy(&relative[tm_dir_len], path, path_len);
93
94 return true;
95}