awk.c

ultraEdit的Ctag标签工具的实现源代码

/*
*   $Id: awk.c,v 1.2 2002/02/17 06:04:32 darren Exp $
*
*   Copyright (c) 2000-2002, Darren Hiebert
*
*   This source code is released for free distribution under the terms of the
*   GNU General Public License.
*
*   This module contains functions for generating tags for AWK functions.
*/

/*
*   INCLUDE FILES
*/
#include "general.h"	/* must always come first */

#include <string.h>

#include "parse.h"
#include "read.h"
#include "vstring.h"

/*
*   DATA DEFINITIONS
*/
typedef enum eAwkKinds {
    K_FUNCTION
} awkKind;

static kindOption AwkKinds [] = {
    { TRUE, 'f', "function", "functions" }
};

/*
*   FUNCTION DEFINITIONS
*/

static void findAwkTags (void)
{
    vString *name = vStringNew ();
    const unsigned char *line;

    while ((line = fileReadLine ()) != NULL)
    {
	if (strncmp ((const char*) line, "function", (size_t) 8) == 0  &&
	    isspace ((int) line [8]))
	{
	    const unsigned char *cp = line + 8;

	    while (isspace ((int) *cp))
		++cp;
	    while (isalnum ((int) *cp)  ||  *cp == '_')
	    {
		vStringPut (name, (int) *cp);
		++cp;
	    }
	    vStringTerminate (name);
	    while (isspace ((int) *cp))
		++cp;
	    if (*cp == '(')
		makeSimpleTag (name, AwkKinds, K_FUNCTION);
	    vStringClear (name);
	    if (*cp != '\0')
		++cp;
	}
    }
    vStringDelete (name);
}

extern parserDefinition* AwkParser ()
{
    static const char *const extensions [] = { "awk", "gawk", "mawk", NULL };
    parserDefinition* def = parserNew ("Awk");
    def->kinds      = AwkKinds;
    def->kindCount  = KIND_COUNT (AwkKinds);
    def->extensions = extensions;
    def->parser     = findAwkTags;
    return def;
}

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