applied patch 890642: wxRE_ADVANCED flag and docs

[wxWidgets.git] / src / regex / splice.sh

diff --git a/src/regex/splice.sh b/src/regex/splice.sh
new file mode 100755 (executable)
index 0000000..02fad6d
--- /dev/null
+++ b/src/regex/splice.sh
@@ -0,0 +1,69 @@
+#!/bin/sh
+#############################################################################
+# Name:        splice
+# Purpose:     Splice a marked section of regcustom.h into regex.h
+# Author:      Mike Wetherell
+# RCS-ID:      $Id$
+# Copyright:   (c) 2004 Mike Wetherell
+# Licence:     wxWindows licence
+#############################################################################
+
+#
+# Works by greping for the marks then passing their line numbers to sed. Which
+# is slighly the long way round, but allows some error checking.
+#
+
+SRC=regcustom.h
+DST=regex.h
+MARK1='^/\* --- begin --- \*/$'
+MARK2='^/\* --- end --- \*/$'
+PROG=`basename $0`
+TMP=$DST.tmp
+
+# findline(pattern, file)
+# Prints the line number of the 1st line matching the pattern in the file
+#
+findline() {
+    if ! LINE=`grep -n -- "$1" "$2"`; then
+        echo "$PROG: marker '$1' not found in '$2'" >&2
+        return 1
+    fi
+    echo $LINE | sed -n '1s/[^0-9].*//p'    # take just the line number
+}
+
+# findmarkers([out] line1, [out] line2, pattern1, pattern2, file)
+# Returns (via the variables named in the 1st two parameters) the line
+# numbers of the lines matching the patterns in file. Checks pattern1 comes
+# before pattern2.
+#
+findmarkers() {
+    if ! LINE1=`findline "$3" "$5"` || ! LINE2=`findline "$4" "$5"`; then
+        return 1
+    fi
+    if [ $LINE1 -ge $LINE2 ]; then
+        echo "$PROG: marker '$3' not before '$4' in '$5'" >&2
+        return 1
+    fi
+    eval $1=$LINE1
+    eval $2=$LINE2
+}
+
+# find markers
+#
+if findmarkers SRCLINE1 SRCLINE2 "$MARK1" "$MARK2" $SRC &&
+   findmarkers DSTLINE1 DSTLINE2 "$MARK1" "$MARK2" $DST
+then
+    # do splice
+    #
+    if (sed $DSTLINE1,\$d $DST &&
+        sed -n $SRCLINE1,${SRCLINE2}p $SRC &&
+        sed 1,${DSTLINE2}d $DST) > $TMP
+    then
+        mv $TMP $DST
+        exit 0
+    else
+        rm $TMP
+    fi
+fi
+
+exit 1