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/*
* $Id: vim.c,v 1.11 2003/12/23 02:27:46 darren Exp $
*
* Copyright (c) 2000-2003, Darren Hiebert
*
* This source code is released for free distribution under the terms of the
* GNU General Public License.
*
* Thanks are due to Jay Glanville for significant improvements.
*
* This module contains functions for generating tags for user-defined
* functions for the Vim editor.
*/
/*
* 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 {
K_AUGROUP,
K_FUNCTION,
K_VARIABLE
} vimKind;
static kindOption VimKinds [] = {
{ TRUE, 'a', "augroup", "autocommand groups" },
{ TRUE, 'f', "function", "function definitions" },
{ TRUE, 'v', "variable", "variable definitions" },
};
/*
* FUNCTION DEFINITIONS
*/
/* This function takes a char pointer, tries to find a scope separator in the
* string, and if it does, returns a pointer to the character after the colon,
* and the character defining the scope.
* If a colon is not found, it returns the original pointer.
*/
static const unsigned char* skipPrefix (const unsigned char* name, int *scope)
{
const unsigned char* result = name;
if (scope != NULL)
*scope = '\0';
if (name[1] == ':')
{
if (scope != NULL)
*scope = *name;
result = name + 2;
}
else if (strncasecmp ((const char*) name, "<SID>", (size_t) 5) == 0)
{
if (scope != NULL)
*scope = *name;
result = name + 5;
}
return result;
}
static void findVimTags (void)
{
vString *name = vStringNew ();
const unsigned char *line;
boolean inFunction = FALSE;
int scope;
while ((line = fileReadLine ()) != NULL)
{
while (isspace ((int) *line))
++line;
if ((int) *line == '"')
continue; /* skip comment */
if (strncmp ((const char*) line, "fu", (size_t) 2) == 0)
{
const unsigned char *cp = line + 1;
inFunction = TRUE;
if ((int) *++cp == 'n' && (int) *++cp == 'c' &&
(int) *++cp == 't' && (int) *++cp == 'i' &&
(int) *++cp == 'o' && (int) *++cp == 'n')
++cp;
if ((int) *cp == '!')
++cp;
if (isspace ((int) *cp))
{
while (isspace ((int) *cp))
++cp;
cp = skipPrefix (cp, &scope);
if (isupper ((int) *cp) || scope == 's' || scope == '<')
{
do
{
vStringPut (name, (int) *cp);
++cp;
} while (isalnum ((int) *cp) || *cp == '_');
vStringTerminate (name);
makeSimpleTag (name, VimKinds, K_FUNCTION);
vStringClear (name);
}
}
}
if (strncmp ((const char*) line, "aug", (size_t) 3) == 0)
{
/* Found Autocommand Group (augroup) */
const unsigned char *cp = line + 2;
if ((int) *++cp == 'r' && (int) *++cp == 'o' &&
(int) *++cp == 'u' && (int) *++cp == 'p')
++cp;
if (isspace ((int) *cp))
{
while (isspace ((int) *cp))
++cp;
if (strncasecmp ((const char*) cp, "end", (size_t) 3) != 0)
{
do
{
vStringPut (name, (int) *cp);
++cp;
} while (isalnum ((int) *cp) || *cp == '_');
vStringTerminate (name);
makeSimpleTag (name, VimKinds, K_AUGROUP);
vStringClear (name);
}
}
}
if (strncmp ((const char*) line, "endf", (size_t) 4) == 0)
inFunction = FALSE;
if (!inFunction &&
strncmp ((const char*) line, "let", (size_t) 3) == 0)
{
/* we've found a variable declared outside of a function!! */
const unsigned char *cp = line + 3;
/* get the name */
if (isspace ((int) *cp))
{
/* deal with spaces, $, @ and & */
while (!isalnum ((int) *cp))
++cp;
cp = skipPrefix (cp, &scope);
do
{
vStringPut (name, (int) *cp);
++cp;
} while (isalnum ((int) *cp) || *cp == '_');
vStringTerminate (name);
makeSimpleTag (name, VimKinds, K_VARIABLE);
vStringClear (name);
}
}
}
vStringDelete (name);
}
extern parserDefinition* VimParser (void)
{
static const char *const extensions [] = { "vim", NULL };
parserDefinition* def = parserNew ("Vim");
def->kinds = VimKinds;
def->kindCount = KIND_COUNT (VimKinds);
def->extensions = extensions;
def->parser = findVimTags;
return def;
}
/* vi:set tabstop=8 shiftwidth=4: */
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