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dpurdie |
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/** -*- mode: c; tabs: 4 -*- ************************************************
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* Module name : macro.c
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* Module type : CMDFILE source file
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* Environment(s): n/a
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*
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* Description:
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*
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Macro
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*
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* Version Who Date Description
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APY 02/03/00 Created
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APY 14/03/00 Handle .. correctly
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16/04/02 realpath() macro
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26/04/04 argument() macro
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05/10/04 vpath3, vlib3 and vglob3
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pathargument
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vsep and vhost
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vlint
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*
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* $Source: /cvsroot/device/DEVL/UTILS/CMDFILE/macro.c,v $
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* $Revision: 1.5 $ $Date: 2004/10/11 08:59:27 $ $State: Exp $
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* $Author: ayoung $ $Locker: $
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*.........................................................................*/
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#include "cmdfile.h"
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static int mlvl; /* macro level */
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#define FSTRING 0x01
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#define FEMBEDDEDSPACES 0x02
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static int nextword( int, const char *, char *, int );
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int
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macro( String_t *str, const char *s )
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{
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char name[ 128 ]; /* macro name */
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int len, len2;
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/* macro name */
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mlvl++;
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if (*s != LDELIMITOR ||
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(len = token( s+1, name, sizeof(name) )) < 1) {
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StringPut( str, MACROCHAR );
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mlvl--;
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return (0);
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}
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len++; /* include '(' */
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verbose(" [%d] Macro(%s)", mlvl, name);
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/* invoke */
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if (strcasecmp( "vpath", name ) == 0 || strcasecmp( "vpath1", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_PATH);
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else if (strcasecmp( "vpath2", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_PATH|VFLAG_MUSTRESOLVE);
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else if (strcasecmp( "vpath3", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_PATH|VFLAG_OPTIONAL);
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else if (strcasecmp( "vlib", name ) == 0 || strcasecmp( "vlib1", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_LIBRARY);
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else if (strcasecmp( "vlib2", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_LIBRARY|VFLAG_MUSTRESOLVE);
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else if (strcasecmp( "vlib3", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_LIBRARY|VFLAG_OPTIONAL);
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else if (strcasecmp( "vlibgcc", name ) == 0)
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len2 = do_vlibgcc( str, s+len );
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else if (strcasecmp( "vhost", name ) == 0)
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len2 = do_vhost(s+len);
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else if (strcasecmp( "vsep", name ) == 0)
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len2 = do_vsep(s+len);
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else if (strcasecmp( "vglob", name ) == 0 || strcasecmp( "vglob1", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_GLOB);
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else if (strcasecmp( "vglob2", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_GLOB|VFLAG_MUSTRESOLVE);
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else if (strcasecmp( "vglob3", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_GLOB|VFLAG_OPTIONAL);
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else if (strcasecmp( "vlint", name ) == 0 || strcasecmp( "vlint1", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_LINT);
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else if (strcasecmp( "vlint2", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_LINT|VFLAG_MUSTRESOLVE);
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else if (strcasecmp( "vlint3", name ) == 0)
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len2 = vpath(str, s+len, VFLAG_LINT|VFLAG_OPTIONAL);
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else if (strcasecmp( "dosify", name ) == 0)
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len2 = dosify(str, s+len);
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else if (strcasecmp( "sep", name ) == 0)
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len2 = do_clean_sep(str, s+len);
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else if (strcasecmp( "realpath", name ) == 0)
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len2 = do_realpath(str, s+len);
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else if (strcasecmp( "shortpath", name ) == 0)
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len2 = do_shortpath(str, s+len);
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else if (strcasecmp( "url2path", name ) == 0)
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len2 = do_url2path(str, s+len);
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else if (strcasecmp( "path2url", name ) == 0)
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len2 = do_path2url(str, s+len);
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else if (strcasecmp( "env", name ) == 0)
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len2 = from_env(str, s+len);
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else
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{
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warning( "unknown macro '%s' -- ignored", name );
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len2 = 0;
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}
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/* termination */
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if (len2 > 0 && expected(s+len+len2, RDELIMITOR) > 0)
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{
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verbose(" [%d] Macro(%s) ok = %s", mlvl, name, StringData(str));
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mlvl--;
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return (len+len2+1);
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}
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verbose(" [%d] Macro(%s) bad = %s", mlvl, name,
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(StringData(str) ? StringData(str) : "NULL") );
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StringPut(str, MACROCHAR);
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mlvl--;
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return (0); /* echo invalid macro */
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}
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int
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expected(
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const char *s, char c)
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{
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if (*s != c) {
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if (*s == '\0')
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warning( "expected '%c', found end-of-file", c );
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else if (*s == '\n')
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warning( "expected '%c', found newline\n", c );
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else warning( "expected '%c', found '%c'\n", c, *s );
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return (0);
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}
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return (1);
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}
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/*
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* token ---
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* Retrieve the next stream word.
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*/
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int
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token( const char *s, char *buf, int len )
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{
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return nextword( 0, s, buf, len );
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}
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/*
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* argument ---
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* Retrieve the next stream word, allowing strings.
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*/
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int
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argument( const char *s, char *buf, int len )
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{
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return nextword( FSTRING, s, buf, len );
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}
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/*
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* pathargument ---
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* Retrieve the next stream word, allowing strings and
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* embedded white-spaces.
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*/
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int
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pathargument( const char *s, char *buf, int len )
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{
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return nextword( FSTRING|FEMBEDDEDSPACES, s, buf, len );
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}
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/*
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* nextword ---
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* Retrieve the next stream word.
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*
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* Returns:
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* -1 on failure, otherwise the number of characters consumed.
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*
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* Notes:
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* The consumed count and resulting word length may differ if
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* leading white space, quotes or strings are envcountered.
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*/
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static int
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nextword( int flags, const register char *s, char *buf, int len )
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{
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String_t mstr; /* macro buffer */
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int str, err, blen, sidx; /* token length */
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const char *os = s;
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char *p;
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#define SIGNORE 0 /* string parse status */
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#define SALLOWED 1
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#define SDOUBLE 2
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#define SSINGLE 3
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if (flags & FSTRING)
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str = SALLOWED;
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else str = SIGNORE;
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for (err = sidx = blen = 0; !err; sidx++, s++)
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{
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if (*s == '\0')
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{
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warning( "unexpected end-of-string in token '%s' -- ignored", os );
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err = 1;
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}
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else if (*s == '\n')
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{
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warning( "unexpected new-line in token '%s' -- ignored", os );
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err = 1;
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}
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/* white space */
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else if (*s == ' ' || *s == '\t')
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{
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if (str == SDOUBLE || str == SSINGLE ||
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(blen && *s == ' ' && (flags & FEMBEDDEDSPACES)) )
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{
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/*
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* Inside a string or embedded spaces are allowed.
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*/
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if (blen < len-1)
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buf[ blen++ ] = *s;
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continue; /* embedded whitespace */
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} else if (blen) {
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break; /* end of token */
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}
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continue; /* consume leading white space */
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}
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/* macros */
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else if (*s == MACROCHAR && blen == 0)
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{
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register int mlen; /* macro length */
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StringInit( &mstr, NULL, MACRO_MAX );
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mlen = macro( &mstr, s+1 ); /* nested macro def */
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for (p = StringData(&mstr); *p; p++)
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{
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if (blen < len-1)
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buf[ blen++ ] = *p;
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}
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free( StringData(&mstr) );
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sidx += mlen, s += mlen; /* skip definition */
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}
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else if ((*s == RDELIMITOR || *s == ',') &&
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(str == SIGNORE || str == SALLOWED))
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{
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break; /* end of token */
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}
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/* strings */
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else if (*s == '"' && (str == SALLOWED || str == SDOUBLE))
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{
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if (str == SDOUBLE) {
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sidx++, s++;
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break; /* end-of-string */
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}
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str = SDOUBLE; /* first character of string */
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}
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else if (*s == '\'' && (str == SALLOWED || str == SSINGLE))
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{
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if (str == SSINGLE) {
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sidx++, s++;
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break; /* end-of-string */
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}
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str = SSINGLE; /* first character of string */
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}
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else if (*s == '\\' && str > SALLOWED &&
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(s[1] == '"' || s[1] == '\'' || s[1] == '\\'))
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{
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if (blen < len-1)
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buf[ blen++ ] = s[1]; /* quote next */
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sidx++, s++;
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}
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/* general */
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else if (blen < len-1) /* buffer overflow ? */
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{
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buf[ blen++ ] = *s;
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}
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}
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if (blen < len-1) /* terminate buffer */
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buf[ blen ] = '\0';
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else buf[ len-1 ] = '\0';
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if (vflg > 2)
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verbose( " = [%d] token(%s) : %d", mlvl, buf, err ? -1 : sidx );
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return (err ? -1 : sidx);
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}
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