Remove bsd string dependencyHEADmain

3 files changed, 26 insertions, 22 deletions

diff --git a/cstring/CMakeLists.txt b/cstring/CMakeLists.txt
index a1abde2..92fe5a7 100644
--- a/cstring/CMakeLists.txt
+++ b/cstring/CMakeLists.txt
@@ -15,8 +15,3 @@ target_include_directories(cstring PUBLIC
 
 target_link_libraries(cstring PUBLIC
   cassert)
-
-if(LINUX)
-  target_link_libraries(cstring PUBLIC
-    -lbsd)
-endif()
diff --git a/cstring/include/cstring.h b/cstring/include/cstring.h
index 8ed4e93..3e693e1 100644
--- a/cstring/include/cstring.h
+++ b/cstring/include/cstring.h
@@ -3,14 +3,23 @@
 
 #include <cassert.h>
 
-#ifdef __linux__
-#include <bsd/string.h>
-#else
-#include <string.h>
-#endif
 #include <stdbool.h>
 #include <stdint.h>
 #include <stdio.h>
+#include <string.h>
+
+// -----------------------------------------------------------------------------
+// C-string helpers.
+
+/// Return a hash of the given string.
+uint64_t cstring_hash(const char* str);
+
+/// Copy 'count' characters from the source to the destination, null-terminating
+/// the destination.
+static inline void cstring_copy(char* dst, const char* src, size_t count) {
+  memcpy(dst, src, count * sizeof(char));
+  dst[count] = '\0';
+}
 
 // -----------------------------------------------------------------------------
 // Fix-sized strings.
@@ -38,7 +47,8 @@
       return (STRING){0};                                                     \
     } else {                                                                  \
       STRING str = (STRING){0};                                               \
-      str.length = strlcpy(str.str, cstr, SIZE);                              \
+      str.length = strlen(cstr);                                              \
+      cstring_copy(str.str, cstr, str.length);                                \
       return str;                                                             \
     }                                                                         \
   }                                                                           \
@@ -65,7 +75,7 @@
   static inline void STRING##_append_cstr_len(                                \
       STRING* a, const char* b, const size_t b_length) {                      \
     ASSERT(a->length + b_length + 1 <= SIZE);                                 \
-    strlcpy(a->str + a->length, b, SIZE - a->length);                         \
+    cstring_copy(a->str + a->length, b, SIZE - a->length);                    \
     a->length += b_length;                                                    \
   }                                                                           \
                                                                               \
@@ -103,7 +113,7 @@
     ASSERT(start < a.length);                                                 \
     ASSERT(end <= a.length);                                                  \
     STRING str = {0};                                                         \
-    strlcpy(str.str, &a.str[start], end - start);                             \
+    cstring_copy(str.str, &a.str[start], end - start);                        \
     return str;                                                               \
   }                                                                           \
                                                                               \
@@ -134,15 +144,6 @@
     return cstring_hash(str.str);                                             \
   }
 
-/// Return a hash of the given string.
-static inline uint64_t cstring_hash(const char* str) {
-  uint64_t hash = 0;
-  for (size_t i = 0; i < strlen(str); ++i) {
-    hash = (uint64_t)str[i] + (hash << 6) + (hash << 16) - hash;
-  }
-  return hash;
-}
-
 DEF_STRING(sstring, 32)    // Small.
 DEF_STRING(mstring, 256)   // Medium.
 DEF_STRING(lstring, 1024)  // Large.
diff --git a/cstring/src/cstring.c b/cstring/src/cstring.c
index 832cb85..e308589 100644
--- a/cstring/src/cstring.c
+++ b/cstring/src/cstring.c
@@ -101,3 +101,11 @@ string string_format_size(size_t size) {
       .length = length,
   };
 }
+
+uint64_t cstring_hash(const char* str) {
+  uint64_t hash = 0;
+  for (size_t i = 0; i < strlen(str); ++i) {
+    hash = (uint64_t)str[i] + (hash << 6) + (hash << 16) - hash;
+  }
+  return hash;
+}