diff --git a/exec.c b/exec.c index afb3933..3f5cc41 100644 --- a/exec.c +++ b/exec.c @@ -212,16 +212,21 @@ static int docmd( char *cline) { } /* - * token: + * new token: * chop a token off a string * return a pointer past the token * - * char *src, *tok; source string, destination token string - * int size; maximum size of token + * char *src in, source string + * char **tokref out, destination of newly allocated token string */ -static char *token( char *src, char *tok, int size) { - int quotef; /* is the current string quoted? */ - char c; /* temporary character */ +static char *newtoken( char *src, char **tokref) { + boolean quotef ; /* is the current string quoted? */ + char *tok ; /* allocated string */ + int size ; /* allocated size */ + int idx = 0 ; /* insertion point into token string */ + + tok = malloc( NSTRING) ; + size = (tok == NULL) ? 0 : NSTRING ; /* first scan past any whitespace in the source string */ while (*src == ' ' || *src == '\t') @@ -230,6 +235,8 @@ static char *token( char *src, char *tok, int size) { /* scan through the source string */ quotef = FALSE; while (*src) { + char c ; /* temporary character */ + /* process special characters */ if (*src == '~') { ++src; @@ -254,9 +261,6 @@ static char *token( char *src, char *tok, int size) { default: c = *(src - 1); } - if (--size > 0) { - *tok++ = c; - } } else { /* check for the end of the token */ if (quotef) { @@ -273,31 +277,67 @@ static char *token( char *src, char *tok, int size) { /* record the character */ c = *src++; - if (--size > 0) - *tok++ = c; } + + if( idx < size - 1) + tok[ idx++] = c ; + else if( size > 1) { + char *tmptok ; + + tmptok = malloc( size + 32) ; + if( tmptok == NULL) + size = 0 ; + else { + memcpy( tmptok, tok, idx) ; + free( tok) ; + tok = tmptok ; + size += 32 ; + tok[ idx++] = c ; + } + } } /* terminate the token and exit */ if (*src) ++src; - *tok = 0; + + if( tok != NULL) + tok[ idx] = 0 ; + + *tokref = tok ; return src; } +static char *token( char *srcstr, char *tok, int maxtoksize) { + char *newtok ; + + srcstr = newtoken( srcstr, &newtok) ; + if( newtok == NULL) + tok[ 0] = 0 ; + else { + strncpy( tok, newtok, maxtoksize - 1) ; + tok[ maxtoksize - 1] = 0 ; + free( newtok) ; + } + + return srcstr ; +} + void gettoken( char *tok, int maxtoksize) { execstr = token( execstr, tok, maxtoksize) ; } +void getnewtoken( char **tokref) { + execstr = newtoken( execstr, tokref) ; +} + boolean gettokval( char *tok, int size) { char *tmpbuf ; - - tmpbuf = malloc( size) ; - if( tmpbuf == NULL) - return FALSE ; /* grab token and advance past */ - gettoken( tmpbuf, size) ; + getnewtoken( &tmpbuf) ; + if( tmpbuf == NULL) + return FALSE ; /* evaluate it */ strncpy( tok, getval( tmpbuf), size - 1) ; @@ -770,10 +810,8 @@ static int dobuf(struct buffer *bp) case DGOTO: /* GOTO directive */ /* .....only if we are currently executing */ if (execlevel == 0) { - /* grab label to jump to */ - eline = - token( eline, golabel, sizeof golabel) ; + eline = token( eline, golabel, sizeof golabel) ; linlen = strlen(golabel); glp = hlp->l_fp; while (glp != hlp) {