[w3m-dev 02700] search refactoring

From: Fumitoshi UKAI  <ukai@debian.or.jp>

ChangeLog

@@ -1,3 +1,17 @@
+2001-12-23  Fumitoshi UKAI  <ukai@debian.or.jp>
+
+	* [w3m-dev 02700] search refactoring
+	* based on http://www.nmn.jp/~hidai/software/w3m/
+	* fm.h: add SR_* constants, result value for search
+	* main.c (srchcore): added
+	* main.c (disp_srchresult): added
+	* main.c (srch): added
+	* main.c (srchfor): use srch()
+	* main.c (srchbak): use srch()
+	* main.c (srch_nxtprv): use srchcore() & disp_srch_result()
+	* search.c (forwardSearch): return SR_* result value
+	* search.c (backwardSearch): ditto
+
 2001-12-23  Fumitoshi UKAI  <ukai@debian.or.jp>
 
 	* [w3m-dev 02699] initialization too late
@@ -1443,4 +1457,4 @@
 	* release-0-2-1
 	* import w3m-0.2.1
 
-$Id: ChangeLog,v 1.162 2001/12/23 14:24:22 ukai Exp $
+$Id: ChangeLog,v 1.163 2001/12/23 14:44:00 ukai Exp $

fm.h

@@ -1,4 +1,4 @@
-/* $Id: fm.h,v 1.29 2001/12/14 17:35:08 ukai Exp $ */
+/* $Id: fm.h,v 1.30 2001/12/23 14:44:00 ukai Exp $ */
 /* 
  * w3m: WWW wo Miru utility
  * 
@@ -184,6 +184,11 @@ void bzero(void *, int);
 #define LB_N_SOURCE	LB_SOURCE
 #define MAX_LB		5
 
+/* Search Result */
+#define SR_FOUND       0x1
+#define SR_NOTFOUND    0x2
+#define SR_WRAPPED     0x4
+
 #ifdef MAINPROGRAM
 int REV_LB[MAX_LB] = {
     LB_N_FRAME, LB_FRAME, LB_N_INFO, LB_INFO, LB_N_SOURCE,

main.c

@@ -1,4 +1,4 @@
-/* $Id: main.c,v 1.41 2001/12/23 14:24:22 ukai Exp $ */
+/* $Id: main.c,v 1.42 2001/12/23 14:44:00 ukai Exp $ */
 #define MAINPROGRAM
 #include "fm.h"
 #include <signal.h>
@@ -1308,78 +1308,82 @@ rdrwSc(void)
     displayBuffer(Currentbuf, B_FORCE_REDRAW);
 }
 
-/* Search regular expression forward */
+/* search by regular expression */
-void
+static int
-srchfor(void)
+srchcore(char *str, int (*func) (Buffer *, char *))
 {
     MySignalHandler(*prevtrap) ();
-    char *str;
+    volatile int i, result = SR_NOTFOUND;
-    int i, n = searchKeyNum();
+
-    volatile int wrapped = 0;
+    if (str != NULL && str != SearchString)
+	SearchString = str;
+    if (SearchString == NULL || *SearchString == '\0')
+	return SR_NOTFOUND;
 
-    str = inputStrHist("Forward: ", NULL, TextHist);
-    if (str != NULL && *str == '\0')
-	str = SearchString;
-    if (str == NULL || *str == '\0') {
-	displayBuffer(Currentbuf, B_NORMAL);
-	return;
-    }
-    SearchString = str;
     prevtrap = signal(SIGINT, intTrap);
     crmode();
     if (SETJMP(IntReturn) == 0)
-	for (i = 0; i < n; i++)
+	for (i = 0; i < PREC_NUM; i++)
-	    wrapped = forwardSearch(Currentbuf, SearchString);
+	    result = func(Currentbuf, SearchString);
     signal(SIGINT, prevtrap);
     term_raw();
     displayBuffer(Currentbuf, B_NORMAL);
     onA();
-    if (wrapped) {
+    return result;
-	disp_message("Search wrapped", FALSE);
+}
-    }
+
-    searchRoutine = forwardSearch;
+void
+disp_srchresult(int result, char *prompt, char *str)
+{
+    if (str == NULL)
+	str = "";
+    if (result & SR_NOTFOUND)
+	disp_message(Sprintf("Not found: %s", str)->ptr, FALSE);
+    else if (result & SR_WRAPPED)
+	disp_message(Sprintf("Search wrapped: %s", str)->ptr, FALSE);
+    else if (show_srch_str)
+	disp_message(Sprintf("%s%s", prompt, str)->ptr, FALSE);
+}
+
+void
+srch(int (*func) (Buffer *, char *), char *prompt)
+{
+    char *str;
+    int result;
+
+    str = inputStrHist(prompt, NULL, TextHist);
+    if (str != NULL && *str == '\0')
+	str = SearchString;
+    if (str == NULL)
+	return;
+    result = srchcore(str, func);
+    disp_srchresult(result, prompt, str);
+    searchRoutine = func;
+}
+
+/* Search regular expression forward */
+void
+srchfor(void)
+{
+    srch(forwardSearch, "Forward: ");
 }
 
 /* Search regular expression backward */
 void
 srchbak(void)
 {
-    MySignalHandler(*prevtrap) ();
+    srch(backwardSearch, "Backward: ");
-    char *str;
-    int i, n = searchKeyNum();
-    volatile int wrapped = 0;
-
-    str = inputStrHist("Backward: ", NULL, TextHist);
-    if (str != NULL && *str == '\0')
-	str = SearchString;
-    if (str == NULL || *str == '\0') {
-	displayBuffer(Currentbuf, B_NORMAL);
-	return;
-    }
-    SearchString = str;
-    prevtrap = signal(SIGINT, intTrap);
-    crmode();
-    if (SETJMP(IntReturn) == 0)
-	for (i = 0; i < n; i++)
-	    wrapped = backwardSearch(Currentbuf, SearchString);
-    signal(SIGINT, prevtrap);
-    term_raw();
-    displayBuffer(Currentbuf, B_NORMAL);
-    onA();
-    if (wrapped) {
-	disp_message("Search wrapped", FALSE);
-    }
-    searchRoutine = backwardSearch;
 }
 
 static void
-srch_nxtprv(volatile int reverse)
+srch_nxtprv(int reverse)
 {
-    int i;
+    int result;
-    volatile int wrapped = 0;
+    /* *INDENT-OFF* */
     static int (*routine[2]) (Buffer *, char *) = {
-    forwardSearch, backwardSearch};
+	forwardSearch, backwardSearch
-    MySignalHandler(*prevtrap) ();
+    };
+    /* *INDENT-ON* */
 
     if (searchRoutine == NULL) {
 	disp_message("No previous regular expression", TRUE);
@@ -1389,24 +1393,9 @@ srch_nxtprv(volatile int reverse)
 	reverse = 1;
     if (searchRoutine == backwardSearch)
 	reverse ^= 1;
-    prevtrap = signal(SIGINT, intTrap);
+    result = srchcore(SearchString, routine[reverse]);
-    crmode();
+    disp_srchresult(result, (reverse ? "Backward: " : "Forward: "),
-    if (SETJMP(IntReturn) == 0)
+		    SearchString);
-	for (i = 0; i < PREC_NUM; i++)
-	    wrapped = (*routine[reverse]) (Currentbuf, SearchString);
-    signal(SIGINT, prevtrap);
-    term_raw();
-    displayBuffer(Currentbuf, B_NORMAL);
-    onA();
-    if (wrapped) {
-	disp_message("Search wrapped", FALSE);
-    }
-    else if (show_srch_str) {
-	disp_message(Sprintf("%s%s",
-			     routine[reverse] ==
-			     forwardSearch ? "Forward: " : "Backward: ",
-			     SearchString)->ptr, FALSE);
-    }
 }
 
 /* Search next matching */

search.c

@@ -1,4 +1,4 @@
-/* $Id: search.c,v 1.4 2001/11/24 02:01:26 ukai Exp $ */
+/* $Id: search.c,v 1.5 2001/12/23 14:44:00 ukai Exp $ */
 #include "fm.h"
 #include "regex.h"
 
@@ -12,12 +12,11 @@ forwardSearch(Buffer *buf, char *str)
 
     if ((p = regexCompile(str, IgnoreCase)) != NULL) {
 	message(p, 0, 0);
-	return FALSE;
+	return SR_NOTFOUND;
     }
     l = begin = buf->currentLine;
     if (l == NULL) {
-	disp_message("Not found", FALSE);
+	return SR_NOTFOUND;
-	return FALSE;
     }
     pos = buf->pos + 1;
 #ifdef JP_CHARSET
@@ -28,7 +27,7 @@ forwardSearch(Buffer *buf, char *str)
 	matchedPosition(&first, &last);
 	buf->pos = first - l->lineBuf;
 	arrangeCursor(buf);
-	return FALSE;
+	return SR_FOUND;
     }
     for (l = l->next;; l = l->next) {
 	if (l == NULL) {
@@ -61,13 +60,12 @@ forwardSearch(Buffer *buf, char *str)
 	    buf->currentLine = l;
 	    gotoLine(buf, l->linenumber);
 	    arrangeCursor(buf);
-	    return wrapped;
+	    return SR_FOUND | (wrapped ? SR_WRAPPED : 0);
 	}
 	if (wrapped && l == begin)	/* no match */
 	    break;
     }
-    disp_message("Not found", FALSE);
+    return SR_NOTFOUND;
-    return FALSE;
 }
 
 int
@@ -80,12 +78,11 @@ backwardSearch(Buffer *buf, char *str)
 
     if ((p = regexCompile(str, IgnoreCase)) != NULL) {
 	message(p, 0, 0);
-	return FALSE;
+	return SR_NOTFOUND;
     }
     l = begin = buf->currentLine;
     if (l == NULL) {
-	disp_message("Not found", FALSE);
+	return SR_NOTFOUND;
-	return FALSE;
     }
     if (buf->pos > 0) {
 	pos = buf->pos - 1;
@@ -112,7 +109,7 @@ backwardSearch(Buffer *buf, char *str)
 	if (found) {
 	    buf->pos = found - l->lineBuf;
 	    arrangeCursor(buf);
-	    return FALSE;
+	    return SR_FOUND;
 	}
     }
     for (l = l->prev;; l = l->prev) {
@@ -146,11 +143,10 @@ backwardSearch(Buffer *buf, char *str)
 	    buf->currentLine = l;
 	    gotoLine(buf, l->linenumber);
 	    arrangeCursor(buf);
-	    return wrapped;
+	    return SR_FOUND | (wrapped ? SR_WRAPPED : 0);
 	}
 	if (wrapped && l == begin)	/* no match */
 	    break;
     }
-    disp_message("Not found", FALSE);
+    return SR_NOTFOUND;
-    return FALSE;
 }