X-Git-Url: https://git.distorted.org.uk/~mdw/ezmlm/blobdiff_plain/5b62e993b0af39700031c2875d7f6654e6a02850..f8beb284087c279acfb30506f5bb32baa4949b44:/sub_std/searchlog.c

diff --git a/sub_std/searchlog.c b/sub_std/searchlog.c
new file mode 100644
index 0000000..1cee6f9
--- /dev/null
+++ b/sub_std/searchlog.c
@@ -0,0 +1,114 @@
+/*$Id: searchlog.c,v 1.6 1999/10/09 14:22:38 lindberg Exp $*/
+/*$Name: ezmlm-idx-040 $*/
+#include "case.h"
+#include "scan.h"
+#include "stralloc.h"
+#include "str.h"
+#include "open.h"
+#include "datetime.h"
+#include "date822fmt.h"
+#include "substdio.h"
+#include "readwrite.h"
+#include "strerr.h"
+#include "error.h"
+#include "errtxt.h"
+#include "subscribe.h"
+
+static stralloc line = {0};
+static stralloc outline = {0};
+static char date[DATE822FMT];
+static datetime_sec when;
+static struct datetime dt;
+static substdio ssin;
+static char inbuf[256];
+
+static void die_nomem(fatal)
+char *fatal;
+{
+  strerr_die2x(100,fatal,ERR_NOMEM);
+}
+
+static void lineout(subwrite,fatal)
+int subwrite();
+char *fatal;
+{
+  (void) scan_ulong(line.s,&when);
+  datetime_tai(&dt,when);		/* there is always at least a '\n' */
+  if (!stralloc_copyb(&outline,date,date822fmt(date,&dt) - 1))
+	die_nomem(fatal);
+  if (!stralloc_cats(&outline,": ")) die_nomem(fatal);
+  if (!stralloc_catb(&outline,line.s,line.len - 1)) die_nomem(fatal);
+  if (subwrite(outline.s,outline.len) == -1)
+	strerr_die3x(111,fatal,ERR_WRITE,"output");
+  return;
+}
+
+void searchlog(dir,search,subwrite,fatal)
+/* opens dir/Log, and outputs via subwrite(s,len) any line that matches */
+/* search. A '_' is search is a wildcard. Any other non-alphanum/'.' char */
+/* is replaced by a '_' */
+
+char *dir;		/* work directory */
+char *search;		/* search string */
+int subwrite();		/* output fxn */
+char *fatal;		/* fatal */
+{
+
+  register unsigned char x;
+  register unsigned char y;
+  register unsigned char *cp;
+  register unsigned char *cpsearch;
+  unsigned register char *cps;
+  unsigned register char ch;
+  unsigned char *cplast, *cpline;
+  unsigned int searchlen;
+  int fd,match;
+
+  searchlen = str_len(search);
+  case_lowerb(search,searchlen);
+  cps = (unsigned char *) search;
+  while ((ch = *(cps++))) {		/* search is potentially hostile */
+    if (ch >= 'a' && ch <= 'z') continue;
+    if (ch >= '0' && ch <= '9') continue;
+    if (ch == '.' || ch == '_') continue;
+    *(cps - 1) = '_';			/* will [also] match char specified */
+  }
+
+  if (!stralloc_copys(&line,dir)) die_nomem(fatal);
+  if (!stralloc_cats(&line,"/Log")) die_nomem(fatal);
+  if (!stralloc_0(&line)) die_nomem(fatal);
+  fd = open_read(line.s);
+  if (fd == -1)
+    if (errno != error_noent)
+	strerr_die4sys(111,fatal,ERR_OPEN,line.s,": ");
+    else
+        strerr_die3x(100,fatal,line.s,ERR_NOEXIST);
+  substdio_fdbuf(&ssin,read,fd,inbuf,sizeof(inbuf));
+
+  for (;;) {
+    if (getln(&ssin,&line,&match,'\n') == -1)
+      strerr_die2sys(111,fatal,ERR_READ_INPUT);
+    if (!match) break;
+    if (!searchlen) {
+      lineout(subwrite,fatal);
+    } else {		/* simple case-insensitive search */
+      cpline = (unsigned char *) line.s - 1;
+      cplast = cpline + line.len - searchlen; /* line has \0 at the end */
+      while ((cp = ++cpline) <= cplast) {
+	cpsearch = (unsigned char *) search;
+	for (;;) {
+	  x = *cpsearch++;
+	  if (!x) break;
+	  y = *cp++ - 'A';
+	  if (y <= 'Z' - 'A') y += 'a'; else y += 'A';
+	  if (x != y && x != '_') break;		/* '_' = wildcard */
+	}
+	if (!x) {
+	  lineout(subwrite,fatal);
+	  break;
+	}
+      }
+    }
+  }
+  close(fd);
+}