[libposix-development] [PATCH] strncpy implementation and tests

[Tordek <ke...@gm...>]

Signed-off-by: Guillermo O. Freschi <to...@to...>
---
 CMakeLists.txt             |    4 ++++
 mandatory/include/string.h |    1 +
 mandatory/string.c         |   20 ++++++++++++++++++++
 3 files changed, 25 insertions(+), 0 deletions(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index c6be902..435d8d0 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -85,15 +85,19 @@ add_executable(printf_scanner
tests/internal/printf_scanner.c
                 ${PROJECT_BINARY_DIR}/${runtime_file_name})
 add_executable(printf_parser tests/internal/printf_parser.c
                 ${PROJECT_BINARY_DIR}/${runtime_file_name})
+add_executable(strncpy tests/internal/strncpy.c
+                ${PROJECT_BINARY_DIR}/${runtime_file_name})
 add_test(puts_hello puts_hello)
 add_test(hello hello)
 add_test(printf_scanner printf_scanner)
 add_test(printf_parser printf_parser)
+add_test(strncpy strncpy)
 target_link_libraries(posix ${LIBPOSIX_COMPILER_STYLE})
 target_link_libraries(hello posix)
 target_link_libraries(puts_hello posix)
 target_link_libraries(printf_scanner posix)
 target_link_libraries(printf_parser posix)
+target_link_libraries(strncpy posix)
 install(TARGETS posix DESTINATION ${LIBPOSIX_LIBRARY_DIRECTORY})
 install(DIRECTORY ${mandatory_include_path}/
         DESTINATION ${LIBPOSIX_INCLUDE_DIRECTORY})
diff --git a/mandatory/include/string.h b/mandatory/include/string.h
index 0c9d517..fe690bd 100644
--- a/mandatory/include/string.h
+++ b/mandatory/include/string.h
@@ -41,5 +41,6 @@ char *strcat(char *restrict, const char *restrict);
 char *strchr(const char *, int);
 int strcmp(const char *, const char *);
 char *strcpy(char *restrict, const char *restrict);
+char *strncpy(char *restrict s1, const char *restrict s2, size_t n);

 #endif /* _STRING_H_DEFINED_ */
diff --git a/mandatory/string.c b/mandatory/string.c
index db91b92..fad1f1e 100644
--- a/mandatory/string.c
+++ b/mandatory/string.c
@@ -77,6 +77,26 @@ char *strcat(char *restrict dst, const char
*restrict src)
 	return dst;
 }

+char *strncpy(char *restrict s1, const char *restrict s2, size_t
size) {
+    char *d = (unsigned char *) s1;
+    char *s = (unsigned char *) s2;
+
+    while(size--) {
+        *d++ = *s++;
+
+        if(*s == '\0')
+            break;
+    }
+
+    size++;
+
+    while(size--) {
+        *d++ = '\0';
+    }
+
+    return s1;
+}
+
 void *memset(void *ptr, int value, size_t size)
 {
 	char *p = (char *)ptr;
-- 
1.6.3.3


-- 
Guillermo O. «Tordek» Freschi. Programador, Escritor, Genio Maligno.
http://tordek.com.ar :: http://twitter.com/tordek
http://www.arcanopedia.com.ar - Juegos de Rol en Argentina