1 files changed, 65 insertions, 0 deletions
diff --git a/misc/fromdos.c b/misc/fromdos.c
new file mode 100644
index 000000000..13450214c
--- /dev/null
+++ b/misc/fromdos.c
@@ -0,0 +1,65 @@
+/* fromdos.c : strip the stupid ^M characters without mistakes! */
+
+/* this can do in-place conversion or be used as a pipe... */
+
+#include <stdio.h>
+#include <errno.h>
+#include <unistd.h>
+#include <string.h>
+
+int main(int argc, char** argv) {
+  int f,c;
+  if (argc <= 1) {
+    if (isatty(0)) {
+      fprintf(stderr,"usage : %s <files>\nStrips ^M characters.\nCan do in-place conversion of many files or can be used in a pipe\n",argv[0]);
+      return 1;
+    }
+    for (;;) {
+      c = getchar();
+      while (c == '\r') {
+        c = getchar();
+        if (c != '\n') putchar(c);
+      }
+      if (c < 0) break;
+      putchar(c);
+    }
+    return 0;
+  }
+  for (f = 1; f < argc; f++) {
+    char* fname = argv[f];
+    char tempname[1024];
+    FILE* in = fopen(fname,"rb");
+    FILE* out;
+    int mod = 0;
+    if (!in) {
+      fprintf(stderr,"%s : %s\n", fname, strerror(errno));
+      return 1;
+    }
+    strcpy(tempname, fname);
+    strcat(tempname, ".temp");
+    out = fopen(tempname, "wb");
+    if (!out) {
+      fprintf(stderr,"%s : %s\n", fname, strerror(errno));
+      return 1;
+    }
+    for (;;) {
+      c = getc(in);
+      while (c == '\r') {
+        c = getc(in);
+        if (c == '\n') mod=1; else putc(c,out);
+      }
+      if (c < 0) break;
+      putc(c,out);
+    }
+    fclose(in);
+    fclose(out);
+    if (!mod) {
+      fprintf(stderr,"%s : no change\n", fname);
+      unlink(tempname);
+    } else if (rename(tempname, fname)) {
+      fprintf(stderr,"Can't mv %s %s : %s\n",tempname,fname,strerror(errno));
+      return 1;
+    }
+  }
+  return 0;
+}