diff options
Diffstat (limited to 'libopts/cook.c')
| -rw-r--r-- | libopts/cook.c | 354 |
1 files changed, 0 insertions, 354 deletions
diff --git a/libopts/cook.c b/libopts/cook.c deleted file mode 100644 index bebd123fca5b..000000000000 --- a/libopts/cook.c +++ /dev/null @@ -1,354 +0,0 @@ - -/* - * $Id: cook.c,v 4.10 2007/02/04 17:44:12 bkorb Exp $ - * Time-stamp: "2006-09-24 15:21:02 bkorb" - * - * This file contains the routines that deal with processing quoted strings - * into an internal format. - */ - -/* - * Automated Options copyright 1992-2007 Bruce Korb - * - * Automated Options is free software. - * You may redistribute it and/or modify it under the terms of the - * GNU General Public License, as published by the Free Software - * Foundation; either version 2, or (at your option) any later version. - * - * Automated Options is distributed in the hope that it will be useful, - * but WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the - * GNU General Public License for more details. - * - * You should have received a copy of the GNU General Public License - * along with Automated Options. See the file "COPYING". If not, - * write to: The Free Software Foundation, Inc., - * 51 Franklin Street, Fifth Floor, - * Boston, MA 02110-1301, USA. - * - * As a special exception, Bruce Korb gives permission for additional - * uses of the text contained in his release of AutoOpts. - * - * The exception is that, if you link the AutoOpts library with other - * files to produce an executable, this does not by itself cause the - * resulting executable to be covered by the GNU General Public License. - * Your use of that executable is in no way restricted on account of - * linking the AutoOpts library code into it. - * - * This exception does not however invalidate any other reasons why - * the executable file might be covered by the GNU General Public License. - * - * This exception applies only to the code released by Bruce Korb under - * the name AutoOpts. If you copy code from other sources under the - * General Public License into a copy of AutoOpts, as the General Public - * License permits, the exception does not apply to the code that you add - * in this way. To avoid misleading anyone as to the status of such - * modified files, you must delete this exception notice from them. - * - * If you write modifications of your own for AutoOpts, it is your choice - * whether to permit this exception to apply to your modifications. - * If you do not wish that, delete this exception notice. - */ - -/* = = = START-STATIC-FORWARD = = = */ -/* static forward declarations maintained by :mkfwd */ -/* = = = END-STATIC-FORWARD = = = */ - -/*=export_func ao_string_cook_escape_char - * private: - * - * what: escape-process a string fragment - * arg: + char const* + pzScan + points to character after the escape + - * arg: + char* + pRes + Where to put the result byte + - * arg: + unsigned int + nl_ch + replacement char if scanned char is \n + - * - * ret-type: unsigned int - * ret-desc: The number of bytes consumed processing the escaped character. - * - * doc: - * - * This function converts "t" into "\t" and all your other favorite - * escapes, including numeric ones: hex and ocatal, too. - * The returned result tells the caller how far to advance the - * scan pointer (passed in). The default is to just pass through the - * escaped character and advance the scan by one. - * - * Some applications need to keep an escaped newline, others need to - * suppress it. This is accomplished by supplying a '\n' replacement - * character that is different from \n, if need be. For example, use - * 0x7F and never emit a 0x7F. - * - * err: @code{NULL} is returned if the string is mal-formed. -=*/ -unsigned int -ao_string_cook_escape_char( char const* pzIn, char* pRes, u_int nl ) -{ - unsigned int res = 1; - - switch (*pRes = *pzIn++) { - case NUL: /* NUL - end of input string */ - return 0; - case '\r': - if (*pzIn != '\n') - return 1; - res++; - /* FALLTHROUGH */ - case '\n': /* NL - emit newline */ - *pRes = (char)nl; - return res; - - case 'a': *pRes = '\a'; break; - case 'b': *pRes = '\b'; break; - case 'f': *pRes = '\f'; break; - case 'n': *pRes = '\n'; break; - case 'r': *pRes = '\r'; break; - case 't': *pRes = '\t'; break; - case 'v': *pRes = '\v'; break; - - case 'x': /* HEX Escape */ - if (isxdigit( (int)*pzIn )) { - unsigned int val; - unsigned char ch = *pzIn++; - - if ((ch >= 'A') && (ch <= 'F')) - val = 10 + (ch - 'A'); - else if ((ch >= 'a') && (ch <= 'f')) - val = 10 + (ch - 'a'); - else val = ch - '0'; - - ch = *pzIn; - - if (! isxdigit( ch )) { - *pRes = val; - res = 2; - break; - } - val <<= 4; - if ((ch >= 'A') && (ch <= 'F')) - val += 10 + (ch - 'A'); - else if ((ch >= 'a') && (ch <= 'f')) - val += 10 + (ch - 'a'); - else val += ch - '0'; - - res = 3; - *pRes = val; - } - break; - - default: - /* - * IF the character copied was an octal digit, - * THEN set the output character to an octal value - */ - if (isdigit( (int)*pRes ) && (*pRes < '8')) { - unsigned int val = *pRes - '0'; - unsigned char ch = *pzIn++; - - /* - * IF the second character is *not* an octal digit, - * THEN save the value and bail - */ - if ((ch < '0') || (ch > '7')) { - *pRes = val; - break; - } - - val = (val<<3) + (ch - '0'); - ch = *pzIn; - res = 2; - - /* - * IF the THIRD character is *not* an octal digit, - * THEN save the value and bail - */ - if ((ch < '0') || (ch > '7')) { - *pRes = val; - break; - } - - /* - * IF the new value would not be too large, - * THEN add on the third and last character value - */ - if ((val<<3) < 0xFF) { - val = (val<<3) + (ch - '0'); - res = 3; - } - - *pRes = val; - break; - } - } - - return res; -} - - -/* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * - * - * A quoted string has been found. - * Find the end of it and compress any escape sequences. - */ -/*=export_func ao_string_cook - * private: - * - * what: concatenate and escape-process strings - * arg: + char* + pzScan + The *MODIFIABLE* input buffer + - * arg: + int* + pLineCt + The (possibly NULL) pointer to a line count + - * - * ret-type: char* - * ret-desc: The address of the text following the processed strings. - * The return value is NULL if the strings are ill-formed. - * - * doc: - * - * A series of one or more quoted strings are concatenated together. - * If they are quoted with double quotes (@code{"}), then backslash - * escapes are processed per the C programming language. If they are - * single quote strings, then the backslashes are honored only when they - * precede another backslash or a single quote character. - * - * err: @code{NULL} is returned if the string(s) is/are mal-formed. -=*/ -char* -ao_string_cook( char* pzScan, int* pLineCt ) -{ - int l = 0; - char q = *pzScan; - - /* - * It is a quoted string. Process the escape sequence characters - * (in the set "abfnrtv") and make sure we find a closing quote. - */ - char* pzD = pzScan++; - char* pzS = pzScan; - - if (pLineCt == NULL) - pLineCt = &l; - - for (;;) { - /* - * IF the next character is the quote character, THEN we may end the - * string. We end it unless the next non-blank character *after* the - * string happens to also be a quote. If it is, then we will change - * our quote character to the new quote character and continue - * condensing text. - */ - while (*pzS == q) { - *pzD = NUL; /* This is probably the end of the line */ - pzS++; - - scan_for_quote: - while (isspace((int)*pzS)) - if (*(pzS++) == '\n') - (*pLineCt)++; - - /* - * IF the next character is a quote character, - * THEN we will concatenate the strings. - */ - switch (*pzS) { - case '"': - case '\'': - break; - - case '/': - /* - * Allow for a comment embedded in the concatenated string. - */ - switch (pzS[1]) { - default: return NULL; - case '/': - /* - * Skip to end of line - */ - pzS = strchr( pzS, '\n' ); - if (pzS == NULL) - return NULL; - (*pLineCt)++; - break; - - case '*': - { - char* p = strstr( pzS+2, "*/" ); - /* - * Skip to terminating star slash - */ - if (p == NULL) - return NULL; - while (pzS < p) { - if (*(pzS++) == '\n') - (*pLineCt)++; - } - - pzS = p + 2; - } - } - goto scan_for_quote; - - default: - /* - * The next non-whitespace character is not a quote. - * The series of quoted strings has come to an end. - */ - return pzS; - } - - q = *(pzS++); /* assign new quote character and advance scan */ - } - - /* - * We are inside a quoted string. Copy text. - */ - switch (*(pzD++) = *(pzS++)) { - case NUL: - return NULL; - - case '\n': - (*pLineCt)++; - break; - - case '\\': - /* - * IF we are escaping a new line, - * THEN drop both the escape and the newline from - * the result string. - */ - if (*pzS == '\n') { - pzS++; - pzD--; - (*pLineCt)++; - } - - /* - * ELSE IF the quote character is '"' or '`', - * THEN we do the full escape character processing - */ - else if (q != '\'') { - int ct = ao_string_cook_escape_char( pzS, pzD-1, (u_int)'\n' ); - if (ct == 0) - return NULL; - - pzS += ct; - } /* if (q != '\'') */ - - /* - * OTHERWISE, we only process "\\", "\'" and "\#" sequences. - * The latter only to easily hide preprocessing directives. - */ - else switch (*pzS) { - case '\\': - case '\'': - case '#': - pzD[-1] = *pzS++; - } - } /* switch (*(pzD++) = *(pzS++)) */ - } /* for (;;) */ -} -/* - * Local Variables: - * mode: C - * c-file-style: "stroustrup" - * indent-tabs-mode: nil - * End: - * end of autoopts/cook.c */ |