nkiss

commit 12eda77969230f52c43a249bde3d3bdad6a83715
parent 21c15082bac137408154535db95264f9d7c7c3df
Author: Nihal Jere <nihal@nihaljere.xyz>
Date:   Sun, 14 Mar 2021 14:25:25 -0500

util.*: add cp to copy files

Diffstat:
M
util.c
 | 
26
++++++++++++++++++++++++++
M
util.h
 | 
1
+

2 files changed, 27 insertions(+), 0 deletions(-)
diff --git a/util.c b/util.c
@@ -151,6 +151,32 @@ err:
     return -1;
 }
 
+int
+cp(char *oldpath, char *newpath)
+{
+    char buf[BUFSIZ];
+    FILE *old = NULL, *new = NULL;
+    int c;
+
+    if ((old = fopen(oldpath, "r")) == NULL)
+        goto err;
+
+    if ((new = fopen(newpath, "w")) == NULL)
+        goto err;
+
+    while ((c = fread(buf, sizeof(char), BUFSIZ, old)) > 0)
+        if (fwrite(buf, sizeof(char), c, new) < c)
+            goto err;
+
+    fclose(old);
+    fclose(new);
+
+    return 0;
+err:
+    if (old) fclose(old);
+    if (new) fclose(new);
+    return -1;
+}
 
 int
 mv(char *oldpath, char *newpath)
diff --git a/util.h b/util.h
@@ -23,6 +23,7 @@ int strcmpcb(const void *p1, const void *p2);
 void strrepl(char *str, const char a, const char b);
 int mkdirs(const char *path);
 int diff(struct diff_t *diff, char **a, char **b);
+int cp(char *oldpath, char *newpath);
 int mv(char *oldpath, char *newpath);
 int file_dropadd(char *path, char *a, char *b);