1 files changed, 132 insertions, 0 deletions
diff --git a/tools/src/qshead.c b/tools/src/qshead.c
new file mode 100644
index 0000000..49130ad
--- /dev/null
+++ b/tools/src/qshead.c
@@ -0,0 +1,132 @@
+/* -*-mode: c; indent-tabs-mode: nil; c-basic-offset: 2; -*-
+ */
+/**
+ * Utilities for the quality of service module mod_qos.
+ *
+ * qshead.c: Shows the beginning of a log file stopping at the provided pattern.
+ *
+ * See http://mod-qos.sourceforge.net/ for further
+ * details.
+ *
+ * Copyright (C) 2023 Pascal Buchbinder
+ *
+ * Licensed to the Apache Software Foundation (ASF) under one or more
+ * contributor license agreements.  See the NOTICE file distributed with
+ * this work for additional information regarding copyright ownership.
+ * The ASF licenses this file to You under the Apache License, Version 2.0
+ * (the "License"); you may not use this file except in compliance with
+ * the License.  You may obtain a copy of the License at
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ *
+ */
+
+static const char revision[] = "$Id: qshead.c 2654 2022-05-13 09:12:42Z pbuchbinder $";
+
+#include <stdio.h>
+#include <unistd.h>
+#include <string.h>
+#include <stdlib.h>
+#include <signal.h>
+
+#include "qs_util.h"
+
+static void usage(char *cmd, int man) {
+  if(man) {
+    //.TH [name of program] [section number] [center footer] [left footer] [center header]
+    printf(".TH %s 1 \"%s\" \"mod_qos utilities %s\" \"%s man page\"\n", qs_CMD(cmd), man_date,
+	   man_version, cmd);
+  }
+  printf("\n");
+  if(man) {
+    printf(".SH NAME\n");
+  }
+  qs_man_print(man, "%s - an utility reading from stdin and printing all"
+               " lines to stdout until"
+               " reaching the defined pattern.\n", cmd);
+  printf("\n");
+  if(man) {
+    printf(".SH SYNOPSIS\n");
+  }
+  qs_man_print(man, "%s%s -p <pattern>\n", man ? "" : "Usage: ", cmd);
+  printf("\n");
+  if(man) {
+    printf(".SH DESCRIPTION\n");
+  } else {
+    printf("Summary\n");
+  }
+  qs_man_print(man, " %s reads lines from stdin and prints them to stdout until a line contains\n", cmd);
+  qs_man_print(man, " the specified pattern (literal string).\n");
+  printf("\n");
+  if(man) {
+    printf(".SH OPTIONS\n");
+  } else {
+    printf("Options\n");
+  }
+  if(man) printf(".TP\n");
+  qs_man_print(man, "  -p <pattern>\n");
+  if(man) printf("\n");
+  qs_man_print(man, "     Search pattern (literal string).\n");
+  printf("\n");
+  if(man) {
+    printf(".SH SEE ALSO\n");
+    printf("qsdt(1), qsexec(1), qsfilter2(1), qsgeo(1), qsgrep(1), qslog(1), qslogger(1), qspng(1), qsre(1), qsrespeed(1), qsrotate(1), qssign(1) qstail(1)\n");
+    printf(".SH AUTHOR\n");
+    printf("Pascal Buchbinder, http://mod-qos.sourceforge.net/\n");
+  } else {
+    printf("See http://mod-qos.sourceforge.net/ for further details.\n");
+  }
+  if(man) {
+    exit(0);
+  } else {
+    exit(1);
+  }
+}
+
+int main(int argc, const char * const argv[]) {
+  char line[32768];
+  const char *pattern = NULL;
+  char *cmd = strrchr(argv[0], '/');
+  int status = 0;
+  if(cmd == NULL) {
+    cmd = (char *)argv[0];
+  } else {
+    cmd++;
+  }
+
+  argc--;
+  argv++;
+  while(argc >= 1) {
+    if(strcmp(*argv,"-p") == 0) {
+      if (--argc >= 1) {
+	pattern = *(++argv);
+      } 
+    } else if(strcmp(*argv,"-?") == 0) {
+      usage(cmd, 0);
+    } else if(strcmp(*argv,"-help") == 0) {
+      usage(cmd, 0);
+    } else if(strcmp(*argv,"--man") == 0) {
+      usage(cmd, 1);
+    }
+    argc--;
+    argv++;
+  }
+
+  if(pattern == NULL) {
+    usage(cmd, 0);
+  }
+
+  while(fgets(line, sizeof(line), stdin) != NULL) {
+    printf("%s", line);
+    if(strstr(line, pattern)) {
+      return status;
+    }
+  }
+  return status;
+}