Merge commit '4773cc1128f60e83ba5721fe1ad3497b15078361'

1 files changed, 388 insertions, 0 deletions

diff --git a/tkblt/generic/tkbltParse.C b/tkblt/generic/tkbltParse.C
new file mode 100644
index 0000000..095b16a
--- /dev/null
+++ b/tkblt/generic/tkbltParse.C
@@ -0,0 +1,388 @@
+/*
+ * Smithsonian Astrophysical Observatory, Cambridge, MA, USA
+ * This code has been modified under the terms listed below and is made
+ * available under the same terms.
+ */
+
+/*
+ *
+ * This file is copied from tclParse.c in the TCL library distribution.
+ *
+ *	Copyright (c) 1987-1993 The Regents of the University of
+ *	California.
+ *
+ *	Copyright (c) 1994-1998 Sun Microsystems, Inc.
+ * 
+ */
+
+/*
+ * Since TCL 8.1.0 these routines have been replaced by ones that
+ * generate byte-codes.  But since these routines are used in vector
+ * expressions, where no such byte-compilation is necessary, I now
+ * include them.  In fact, the byte-compiled versions would be slower
+ * since the compiled code typically runs only one time.
+ */
+
+#include <stdlib.h>
+#include <string.h>
+
+#include <iostream>
+#include <sstream>
+#include <iomanip>
+using namespace std;
+
+#include <tcl.h>
+
+#include "tkbltParse.h"
+
+using namespace Blt;
+
+/*
+ * A table used to classify input characters to assist in parsing
+ * TCL commands.  The table should be indexed with a signed character
+ * using the CHAR_TYPE macro.  The character may have a negative
+ * value.  The CHAR_TYPE macro takes a pointer to a signed character
+ * and a pointer to the last character in the source string.  If the
+ * src pointer is pointing at the terminating null of the string,
+ * CHAR_TYPE returns TCL_COMMAND_END.
+ */
+
+#define STATIC_STRING_SPACE	150
+#define TCL_NORMAL		0x01
+#define TCL_SPACE		0x02
+#define TCL_COMMAND_END		0x04
+#define TCL_QUOTE		0x08
+#define TCL_OPEN_BRACKET	0x10
+#define TCL_OPEN_BRACE		0x20
+#define TCL_CLOSE_BRACE		0x40
+#define TCL_BACKSLASH		0x80
+#define TCL_DOLLAR		0x00
+
+/*
+ * The following table assigns a type to each character. Only types
+ * meaningful to TCL parsing are represented here. The table is
+ * designed to be referenced with either signed or unsigned characters,
+ * so it has 384 entries. The first 128 entries correspond to negative
+ * character values, the next 256 correspond to positive character
+ * values. The last 128 entries are identical to the first 128. The
+ * table is always indexed with a 128-byte offset (the 128th entry
+ * corresponds to a 0 character value).
+ */
+
+static unsigned char tclTypeTable[] =
+{
+ /*
+     * Negative character values, from -128 to -1:
+     */
+
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+
+    /*
+     * Positive character values, from 0-127:
+     */
+
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_SPACE, TCL_COMMAND_END, TCL_SPACE,
+    TCL_SPACE, TCL_SPACE, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_SPACE, TCL_NORMAL, TCL_QUOTE, TCL_NORMAL,
+    TCL_DOLLAR, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_COMMAND_END,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_OPEN_BRACKET,
+    TCL_BACKSLASH, TCL_COMMAND_END, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_OPEN_BRACE,
+    TCL_NORMAL, TCL_CLOSE_BRACE, TCL_NORMAL, TCL_NORMAL,
+
+    /*
+     * Large unsigned character values, from 128-255:
+     */
+
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+    TCL_NORMAL, TCL_NORMAL, TCL_NORMAL, TCL_NORMAL,
+};
+
+#define CHAR_TYPE(src,last) \
+	(((src)==(last))?TCL_COMMAND_END:(tclTypeTable+128)[(int)*(src)])
+
+int Blt::ParseNestedCmd(Tcl_Interp* interp, const char *string,
+		       int flags, const char **termPtr, ParseValue *parsePtr)
+
+{
+  return TCL_ERROR;
+}
+
+int Blt::ParseBraces(Tcl_Interp* interp, const char *string,
+		    const char **termPtr, ParseValue *parsePtr)
+{
+    int level;
+    const char *src;
+    char *dest, *end;
+    char c;
+    const char *lastChar = string + strlen(string);
+
+    src = string;
+    dest = parsePtr->next;
+    end = parsePtr->end;
+    level = 1;
+
+    /*
+     * Copy the characters one at a time to the result area, stopping
+     * when the matching close-brace is found.
+     */
+
+    for (;;) {
+	c = *src;
+	src++;
+
+	if (dest == end) {
+	    parsePtr->next = dest;
+	    (*parsePtr->expandProc) (parsePtr, 20);
+	    dest = parsePtr->next;
+	    end = parsePtr->end;
+	}
+	*dest = c;
+	dest++;
+
+	if (CHAR_TYPE(src - 1, lastChar) == TCL_NORMAL) {
+	    continue;
+	} else if (c == '{') {
+	    level++;
+	} else if (c == '}') {
+	    level--;
+	    if (level == 0) {
+		dest--;		/* Don't copy the last close brace. */
+		break;
+	    }
+	} else if (c == '\\') {
+	    int count;
+
+	    /*
+	     * Must always squish out backslash-newlines, even when in
+	     * braces.  This is needed so that this sequence can appear
+	     * anywhere in a command, such as the middle of an expression.
+	     */
+
+	    if (*src == '\n') {
+		dest[-1] = Tcl_Backslash(src - 1, &count);
+		src += count - 1;
+	    } else {
+		Tcl_Backslash(src - 1, &count);
+		while (count > 1) {
+		    if (dest == end) {
+			parsePtr->next = dest;
+			(*parsePtr->expandProc) (parsePtr, 20);
+			dest = parsePtr->next;
+			end = parsePtr->end;
+		    }
+		    *dest = *src;
+		    dest++;
+		    src++;
+		    count--;
+		}
+	    }
+	} else if (c == '\0') {
+	    Tcl_AppendResult(interp, "missing close-brace", (char *)NULL);
+	    *termPtr = string - 1;
+	    return TCL_ERROR;
+	}
+    }
+
+    *dest = '\0';
+    parsePtr->next = dest;
+    *termPtr = src;
+    return TCL_OK;
+}
+
+void Blt::ExpandParseValue(ParseValue *parsePtr, int needed)
+
+{
+    /*
+     * Either double the size of the buffer or add enough new space
+     * to meet the demand, whichever produces a larger new buffer.
+     */
+    int size = (parsePtr->end - parsePtr->buffer) + 1;
+    if (size < needed)
+	size += needed;
+    else
+	size += size;
+
+    char* buffer = (char*)malloc((unsigned int)size);
+
+    /*
+     * Copy from old buffer to new, free old buffer if needed, and
+     * mark new buffer as malloc-ed.
+     */
+    memcpy((VOID *) buffer, (VOID *) parsePtr->buffer,
+	(size_t) (parsePtr->next - parsePtr->buffer));
+    parsePtr->next = buffer + (parsePtr->next - parsePtr->buffer);
+    if (parsePtr->clientData != 0) {
+	free(parsePtr->buffer);
+    }
+    parsePtr->buffer = buffer;
+    parsePtr->end = buffer + size - 1;
+    parsePtr->clientData = (ClientData)1;
+}
+
+int Blt::ParseQuotes(Tcl_Interp* interp, const char *string, int termChar,
+		    int flags, const char **termPtr, ParseValue *parsePtr)
+{
+    const char *src;
+    char *dest, c;
+    const char *lastChar = string + strlen(string);
+
+    src = string;
+    dest = parsePtr->next;
+
+    for (;;) {
+	if (dest == parsePtr->end) {
+	    /*
+	     * Target buffer space is about to run out.  Make more space.
+	     */
+	    parsePtr->next = dest;
+	    (*parsePtr->expandProc) (parsePtr, 1);
+	    dest = parsePtr->next;
+	}
+	c = *src;
+	src++;
+	if (c == termChar) {
+	    *dest = '\0';
+	    parsePtr->next = dest;
+	    *termPtr = src;
+	    return TCL_OK;
+	} else if (CHAR_TYPE(src - 1, lastChar) == TCL_NORMAL) {
+	  copy:
+	    *dest = c;
+	    dest++;
+	    continue;
+	} else if (c == '$') {
+	    int length;
+	    const char *value;
+
+	    value = Tcl_ParseVar(interp, src - 1, termPtr);
+	    if (value == NULL) {
+		return TCL_ERROR;
+	    }
+	    src = *termPtr;
+	    length = strlen(value);
+	    if ((parsePtr->end - dest) <= length) {
+		parsePtr->next = dest;
+		(*parsePtr->expandProc) (parsePtr, length);
+		dest = parsePtr->next;
+	    }
+	    strcpy(dest, value);
+	    dest += length;
+	    continue;
+	} else if (c == '[') {
+	    int result;
+
+	    parsePtr->next = dest;
+	    result = ParseNestedCmd(interp, src, flags, termPtr, parsePtr);
+	    if (result != TCL_OK) {
+		return result;
+	    }
+	    src = *termPtr;
+	    dest = parsePtr->next;
+	    continue;
+	} else if (c == '\\') {
+	    int nRead;
+
+	    src--;
+	    *dest = Tcl_Backslash(src, &nRead);
+	    dest++;
+	    src += nRead;
+	    continue;
+	} else if (c == '\0') {
+	    Tcl_ResetResult(interp);
+	    ostringstream str;
+	    str << "missing " << termChar << ends;
+	    Tcl_SetStringObj(Tcl_GetObjResult(interp), str.str().c_str(), 9);
+	    *termPtr = string - 1;
+	    return TCL_ERROR;
+	} else {
+	    goto copy;
+	}
+    }
+}
+