X-Git-Url: https://ncurses.scripts.mit.edu/?p=ncurses.git;a=blobdiff_plain;f=ncurses%2Ftinfo%2Fcomp_scan.c;h=48d3300287cfce8a9be1c17ae4be9c46966dc161;hp=a57af76ca6d70505351ed3877cb67c5c9a5b2ffa;hb=96d6b16de0d487e5d3aed0302a179dbce11b5d96;hpb=55ccd2b959766810cf7db8d1c4462f338ce0afc8 diff --git a/ncurses/tinfo/comp_scan.c b/ncurses/tinfo/comp_scan.c index a57af76c..48d33002 100644 --- a/ncurses/tinfo/comp_scan.c +++ b/ncurses/tinfo/comp_scan.c @@ -1,5 +1,5 @@ /**************************************************************************** - * Copyright (c) 1998-2004,2005 Free Software Foundation, Inc. * + * Copyright (c) 1998-2008,2010 Free Software Foundation, Inc. * * * * Permission is hereby granted, free of charge, to any person obtaining a * * copy of this software and associated documentation files (the * @@ -48,10 +48,9 @@ #include #include -#include #include -MODULE_ID("$Id: comp_scan.c,v 1.76 2005/06/04 22:04:45 tom Exp $") +MODULE_ID("$Id: comp_scan.c,v 1.88 2010/08/28 19:26:09 tom Exp $") /* * Maximum length of string capability we'll accept before raising an error. @@ -61,19 +60,13 @@ MODULE_ID("$Id: comp_scan.c,v 1.76 2005/06/04 22:04:45 tom Exp $") #define iswhite(ch) (ch == ' ' || ch == '\t') -NCURSES_EXPORT_VAR(int) -_nc_syntax = 0; /* termcap or terminfo? */ -NCURSES_EXPORT_VAR(long) -_nc_curr_file_pos = 0; /* file offset of current line */ -NCURSES_EXPORT_VAR(long) -_nc_comment_start = 0; /* start of comment range before name */ -NCURSES_EXPORT_VAR(long) -_nc_comment_end = 0; /* end of comment range before name */ -NCURSES_EXPORT_VAR(long) -_nc_start_line = 0; /* start line of current entry */ - -NCURSES_EXPORT_VAR(struct token) -_nc_curr_token = +NCURSES_EXPORT_VAR (int) _nc_syntax = 0; /* termcap or terminfo? */ +NCURSES_EXPORT_VAR (long) _nc_curr_file_pos = 0; /* file offset of current line */ +NCURSES_EXPORT_VAR (long) _nc_comment_start = 0; /* start of comment range before name */ +NCURSES_EXPORT_VAR (long) _nc_comment_end = 0; /* end of comment range before name */ +NCURSES_EXPORT_VAR (long) _nc_start_line = 0; /* start line of current entry */ + +NCURSES_EXPORT_VAR (struct token) _nc_curr_token = { 0, 0, 0 }; @@ -91,8 +84,7 @@ static int pushtype; /* type of pushback token */ static char *pushname; #if NCURSES_EXT_FUNCS -NCURSES_EXPORT_VAR(bool) -_nc_disable_period = FALSE; /* used by tic -a option */ +NCURSES_EXPORT_VAR (bool) _nc_disable_period = FALSE; /* used by tic -a option */ #endif /***************************************************************************** @@ -203,6 +195,7 @@ next_char(void) result = typeRealloc(char, allocated, result); if (result == 0) return (EOF); + bufstart = result; } if (used == 0) _nc_curr_file_pos = ftell(yyin); @@ -210,6 +203,10 @@ next_char(void) if (fgets(result + used, (int) (allocated - used), yyin) != 0) { bufstart = result; if (used == 0) { + if (_nc_curr_line == 0 + && IS_TIC_MAGIC(result)) { + _nc_err_abort("This is a compiled terminal description, not a source"); + } _nc_curr_line++; _nc_curr_col = 0; } @@ -284,7 +281,7 @@ end_of_stream(void) } /* Assume we may be looking at a termcap-style continuation */ -static inline int +static NCURSES_INLINE int eat_escaped_newline(int ch) { if (ch == '\\') @@ -293,6 +290,15 @@ eat_escaped_newline(int ch) return ch; } +#define TOK_BUF_SIZE MAX_ENTRY_SIZE + +#define OkToAdd() \ + ((tok_ptr - tok_buf) < (TOK_BUF_SIZE - 2)) + +#define AddCh(ch) \ + *tok_ptr++ = (char) ch; \ + *tok_ptr = '\0' + /* * int * get_token() @@ -330,12 +336,12 @@ NCURSES_EXPORT(int) _nc_get_token(bool silent) { static const char terminfo_punct[] = "@%&*!#"; - static char *buffer; + static char *tok_buf; char *after_list; char *after_name; char *numchk; - char *ptr; + char *tok_ptr; char *s; char numbuf[80]; int ch; @@ -367,10 +373,10 @@ _nc_get_token(bool silent) if (end_of_stream()) { yyin = 0; next_char(); /* frees its allocated memory */ - if (buffer != 0) { - if (_nc_curr_token.tk_name == buffer) + if (tok_buf != 0) { + if (_nc_curr_token.tk_name == tok_buf) _nc_curr_token.tk_name = 0; - FreeAndNull(buffer); + FreeAndNull(tok_buf); } return (EOF); } @@ -421,20 +427,20 @@ _nc_get_token(bool silent) && !strchr(terminfo_punct, (char) ch)) { if (!silent) _nc_warning("Illegal character (expected alphanumeric or %s) - '%s'", - terminfo_punct, unctrl((chtype) ch)); + terminfo_punct, unctrl(UChar(ch))); _nc_panic_mode(separator); goto start_token; } - if (buffer == 0) - buffer = typeMalloc(char, MAX_ENTRY_SIZE); + if (tok_buf == 0) + tok_buf = typeMalloc(char, TOK_BUF_SIZE); #ifdef TRACE old_line = _nc_curr_line; old_col = _nc_curr_col; #endif - ptr = buffer; - *(ptr++) = ch; + tok_ptr = tok_buf; + AddCh(ch); if (first_column) { _nc_comment_start = token_start; @@ -448,9 +454,9 @@ _nc_get_token(bool silent) if (ch == EOF) { _nc_err_abort(MSG_NO_INPUTS); } else if (ch == '|') { - after_list = ptr; + after_list = tok_ptr; if (after_name == 0) - after_name = ptr; + after_name = tok_ptr; } else if (ch == ':' && last_char() != ',') { _nc_syntax = SYN_TERMCAP; separator = ':'; @@ -474,9 +480,13 @@ _nc_get_token(bool silent) } else ch = eat_escaped_newline(ch); - *ptr++ = ch; + if (OkToAdd()) { + AddCh(ch); + } else { + break; + } } - ptr[0] = '\0'; + *tok_ptr = '\0'; if (_nc_syntax == ERR) { /* * Grrr...what we ought to do here is barf, complaining that @@ -488,9 +498,11 @@ _nc_get_token(bool silent) separator = ':'; } else if (_nc_syntax == SYN_TERMINFO) { /* throw away trailing /, *$/ */ - for (--ptr; iswhite(*ptr) || *ptr == ','; ptr--) + for (--tok_ptr; + iswhite(*tok_ptr) || *tok_ptr == ','; + tok_ptr--) continue; - ptr[1] = '\0'; + tok_ptr[1] = '\0'; } /* @@ -501,8 +513,8 @@ _nc_get_token(bool silent) if (after_name != 0) { ch = *after_name; *after_name = '\0'; - _nc_set_type(buffer); - *after_name = ch; + _nc_set_type(tok_buf); + *after_name = (char) ch; } /* @@ -517,7 +529,7 @@ _nc_get_token(bool silent) _nc_warning("older tic versions may treat the description field as an alias"); } } else { - after_list = buffer + strlen(buffer); + after_list = tok_buf + strlen(tok_buf); DEBUG(1, ("missing description")); } @@ -526,7 +538,7 @@ _nc_get_token(bool silent) * rdist and some termcap tools. Slashes are a no-no. Other * special characters can be dangerous due to shell expansion. */ - for (s = buffer; s < after_list; ++s) { + for (s = tok_buf; s < after_list; ++s) { if (isspace(UChar(*s))) { if (!silent) _nc_warning("whitespace in name or alias field"); @@ -542,7 +554,7 @@ _nc_get_token(bool silent) } } - _nc_curr_token.tk_name = buffer; + _nc_curr_token.tk_name = tok_buf; type = NAMES; } else { if (had_newline && _nc_syntax == SYN_TERMCAP) { @@ -559,30 +571,35 @@ _nc_get_token(bool silent) break; } } - *(ptr++) = ch; + if (OkToAdd()) { + AddCh(ch); + } else { + ch = EOF; + break; + } } - *ptr++ = '\0'; + *tok_ptr++ = '\0'; /* separate name/value in buffer */ switch (ch) { case ',': case ':': if (ch != separator) _nc_err_abort("Separator inconsistent with syntax"); - _nc_curr_token.tk_name = buffer; + _nc_curr_token.tk_name = tok_buf; type = BOOLEAN; break; case '@': if ((ch = next_char()) != separator && !silent) _nc_warning("Missing separator after `%s', have %s", - buffer, unctrl((chtype) ch)); - _nc_curr_token.tk_name = buffer; + tok_buf, unctrl(UChar(ch))); + _nc_curr_token.tk_name = tok_buf; type = CANCEL; break; case '#': found = 0; while (isalnum(ch = next_char())) { - numbuf[found++] = ch; + numbuf[found++] = (char) ch; if (found >= sizeof(numbuf) - 1) break; } @@ -590,21 +607,21 @@ _nc_get_token(bool silent) number = strtol(numbuf, &numchk, 0); if (!silent) { if (numchk == numbuf) - _nc_warning("no value given for `%s'", buffer); + _nc_warning("no value given for `%s'", tok_buf); if ((*numchk != '\0') || (ch != separator)) _nc_warning("Missing separator"); } - _nc_curr_token.tk_name = buffer; + _nc_curr_token.tk_name = tok_buf; _nc_curr_token.tk_valnumber = number; type = NUMBER; break; case '=': - ch = _nc_trans_string(ptr, buffer + MAX_ENTRY_SIZE); + ch = _nc_trans_string(tok_ptr, tok_buf + TOK_BUF_SIZE); if (!silent && ch != separator) _nc_warning("Missing separator"); - _nc_curr_token.tk_name = buffer; - _nc_curr_token.tk_valstring = ptr; + _nc_curr_token.tk_name = tok_buf; + _nc_curr_token.tk_valstring = tok_ptr; type = STRING; break; @@ -615,7 +632,7 @@ _nc_get_token(bool silent) /* just to get rid of the compiler warning */ type = UNDEF; if (!silent) - _nc_warning("Illegal character - '%s'", unctrl((chtype) ch)); + _nc_warning("Illegal character - '%s'", unctrl(UChar(ch))); } } /* end else (first_column == FALSE) */ } /* end else (ch != EOF) */ @@ -708,41 +725,47 @@ _nc_trans_string(char *ptr, char *last) int count = 0; int number = 0; int i, c; - chtype ch, last_ch = '\0'; + int last_ch = '\0'; bool ignored = FALSE; bool long_warning = FALSE; - while ((ch = c = next_char()) != (chtype) separator && c != EOF) { - if (ptr == (last - 1)) + while ((c = next_char()) != separator && c != EOF) { + if (ptr >= (last - 1)) { + if (c != EOF) { + while ((c = next_char()) != separator && c != EOF) { + ; + } + } break; + } if ((_nc_syntax == SYN_TERMCAP) && c == '\n') break; - if (ch == '^' && last_ch != '%') { - ch = c = next_char(); + if (c == '^' && last_ch != '%') { + c = next_char(); if (c == EOF) _nc_err_abort(MSG_NO_INPUTS); - if (!(is7bits(ch) && isprint(ch))) { - _nc_warning("Illegal ^ character - '%s'", unctrl(ch)); + if (!(is7bits(c) && isprint(c))) { + _nc_warning("Illegal ^ character - '%s'", unctrl(UChar(c))); } - if (ch == '?') { + if (c == '?') { *(ptr++) = '\177'; if (_nc_tracing) _nc_warning("Allow ^? as synonym for \\177"); } else { - if ((ch &= 037) == 0) - ch = 128; - *(ptr++) = (char) (ch); + if ((c &= 037) == 0) + c = 128; + *(ptr++) = (char) (c); } - } else if (ch == '\\') { - ch = c = next_char(); + } else if (c == '\\') { + c = next_char(); if (c == EOF) _nc_err_abort(MSG_NO_INPUTS); - if (ch >= '0' && ch <= '7') { - number = ch - '0'; + if (c >= '0' && c <= '7') { + number = c - '0'; for (i = 0; i < 2; i++) { - ch = c = next_char(); + c = next_char(); if (c == EOF) _nc_err_abort(MSG_NO_INPUTS); @@ -819,31 +842,31 @@ _nc_trans_string(char *ptr, char *last) default: _nc_warning("Illegal character '%s' in \\ sequence", - unctrl(ch)); + unctrl(UChar(c))); /* FALLTHRU */ case '|': - *(ptr++) = (char) ch; - } /* endswitch (ch) */ - } /* endelse (ch < '0' || ch > '7') */ + *(ptr++) = (char) c; + } /* endswitch (c) */ + } /* endelse (c < '0' || c > '7') */ } - /* end else if (ch == '\\') */ - else if (ch == '\n' && (_nc_syntax == SYN_TERMINFO)) { + /* end else if (c == '\\') */ + else if (c == '\n' && (_nc_syntax == SYN_TERMINFO)) { /* * Newlines embedded in a terminfo string are ignored, provided * that the next line begins with whitespace. */ ignored = TRUE; } else { - *(ptr++) = (char) ch; + *(ptr++) = (char) c; } if (!ignored) { if (_nc_curr_col <= 1) { - push_back(ch); - ch = '\n'; + push_back((char) c); + c = '\n'; break; } - last_ch = ch; + last_ch = c; count++; } ignored = FALSE; @@ -856,7 +879,7 @@ _nc_trans_string(char *ptr, char *last) *ptr = '\0'; - return (ch); + return (c); } /* @@ -908,6 +931,8 @@ _nc_panic_mode(char ch) NCURSES_EXPORT(void) _nc_comp_scan_leaks(void) { - FreeAndNull(pushname); + if (pushname != 0) { + FreeAndNull(pushname); + } } #endif