1 files changed, 110 insertions, 0 deletions

diff --git a/private/sdktools/head/head.c b/private/sdktools/head/head.c
new file mode 100644
index 000000000..cf96becee
--- /dev/null
+++ b/private/sdktools/head/head.c
@@ -0,0 +1,110 @@
+/* head - first n lines to STDOUT
+ *
+ *   20-Jul-1991 ianja Wrote it.
+ *   21-Jul-1991 ianja Close stdin (for piped input)
+ */
+
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <windows.h>
+
+int Head(char *pszFile, int nLines, BOOL fBanner);
+char *Version = "HEAD v1.1 1991-06-20:";
+
+#define BUFSZ 256
+
+void
+_CRTAPI1 main (argc, argv)
+int argc;
+char *argv[];
+{
+    int  nArg;
+    int  cLines = 10;  // default
+    int  nFiles = 0;
+    int  nErr = 0;
+
+    if ((argc > 1) && ((*argv[1] == '-') || (*argv[1] == '/'))) {
+        if (argv[1][1] == '?') {
+            printf("%s\n", Version);
+            printf("usage: HEAD [switches] [filename]*\n");
+            printf("   switches: [-?] display this message\n");
+            printf("             [-n] display top n lines of each file (default 10)\n");
+            exit(0);
+        }
+
+        cLines = atoi(argv[1]+1);
+        nArg = 2;
+    } else {
+        nArg = 1;
+    }
+
+    nFiles = argc - nArg;
+
+    if (nFiles < 1) {
+        nErr += Head(NULL, cLines, FALSE);
+    } else while (nArg < argc) {
+        nErr += Head(argv[nArg], cLines, (nFiles > 1));
+        nArg++;
+    }
+
+    if (nErr) {
+        exit(2);
+    } else {
+        exit(0);
+    }
+}
+
+int Head(char *pszFile, int nLines, BOOL fBanner)
+{
+    FILE *fp;
+    int nErr = 0;
+    char buff[BUFSZ];
+
+    /*
+     * Open file for reading
+     */
+    if (pszFile) {
+        if ((fp = fopen(pszFile, "r")) == NULL) {
+            fprintf(stderr, "HEAD: can't open %s\n", pszFile);
+            return 1;
+        }
+    } else {
+        fp = stdin;
+    }
+
+    /*
+     * Banner printed if there is more than one input file
+     */
+    if (fBanner) {
+        fprintf(stdout, "==> %s <==\n", pszFile);
+    }
+
+    /*
+     * Print cLines, or up to end of file, whichever comes first
+     */
+    while (nLines-- > 0) {
+        if (fgets(buff, BUFSZ-1, fp) == NULL) {
+            if (!feof(fp)) {
+                fprintf(stderr, "HEAD: can't read %s\n", pszFile);
+                nErr++;
+                goto CloseOut;
+            }
+            break;
+        }
+        if (fputs(buff, stdout) == EOF) {
+            fprintf(stderr, "can't write output\n");
+            nErr++;
+            goto CloseOut;
+        }
+    }
+
+    if (fBanner) {
+        fprintf(stdout, "\n");
+    }
+
+CloseOut:
+    fclose(fp);
+    return nErr;
+}
+