Index: ObsoleteFiles.inc =================================================================== --- ObsoleteFiles.inc +++ ObsoleteFiles.inc @@ -38,6 +38,8 @@ # xargs -n1 | sort | uniq -d; # done +# 20170116: fparseln(3) moved from libutil to libc +OLD_LIBS+=lib/libutil.so.9 # 20170110: Four files from ggate tests consolidated into one OLD_FILES+=usr/tests/sys/geom/class/gate/1_test OLD_FILES+=usr/tests/sys/geom/class/gate/2_test Index: UPDATING =================================================================== --- UPDATING +++ UPDATING @@ -51,6 +51,10 @@ ****************************** SPECIAL WARNING: ****************************** +20170116: + fparseln(3) has been moved from libutil to libc for compatibility + with Linux's libbsd and NetBSD (which is where the original + implementation came from). 20170112: The EM_MULTIQUEUE kernel configuration option is deprecated now that the em(4) driver conforms to iflib specifications. Index: include/stdio.h =================================================================== --- include/stdio.h +++ include/stdio.h @@ -232,6 +232,13 @@ #define stdout __stdoutp #define stderr __stderrp +/* fparseln(3) */ +#define FPARSELN_UNESCESC 0x01 +#define FPARSELN_UNESCCONT 0x02 +#define FPARSELN_UNESCCOMM 0x04 +#define FPARSELN_UNESCREST 0x08 +#define FPARSELN_UNESCALL 0x0f + __BEGIN_DECLS #ifdef _XLOCALE_H_ #include @@ -248,6 +255,8 @@ int fgetpos(FILE * __restrict, fpos_t * __restrict); char *fgets(char * __restrict, int, FILE * __restrict); FILE *fopen(const char * __restrict, const char * __restrict); +char *fparseln(FILE *_fp, size_t *_len, size_t *_lineno, + const char _delim[3], int _flags); int fprintf(FILE * __restrict, const char * __restrict, ...); int fputc(int, FILE *); int fputs(const char * __restrict, FILE * __restrict); Index: lib/libc/stdio/Makefile.inc =================================================================== --- lib/libc/stdio/Makefile.inc +++ lib/libc/stdio/Makefile.inc @@ -9,7 +9,7 @@ feof.c ferror.c fflush.c fgetc.c fgetln.c fgetpos.c fgets.c fgetwc.c \ fgetwln.c fgetws.c \ fileno.c findfp.c flags.c fmemopen.c fopen.c \ - fopencookie.c fprintf.c fpurge.c \ + fopencookie.c fparseln.c fprintf.c fpurge.c \ fputc.c fputs.c \ fputwc.c fputws.c fread.c freopen.c fscanf.c fseek.c fsetpos.c \ ftell.c funopen.c fvwrite.c fwalk.c fwide.c fwprintf.c fwscanf.c \ @@ -36,7 +36,7 @@ MAN+= fclose.3 ferror.3 fflush.3 fgetln.3 fgets.3 fgetwln.3 fgetws.3 \ flockfile.3 \ - fopen.3 fopencookie.3 fputs.3 \ + fopen.3 fopencookie.3 fparseln.3 fputs.3 \ fputws.3 fread.3 fseek.3 funopen.3 fwide.3 getc.3 \ getline.3 getwc.3 mktemp.3 open_memstream.3 \ printf.3 printf_l.3 putc.3 putwc.3 remove.3 scanf.3 scanf_l.3 setbuf.3 \ Index: lib/libc/stdio/Symbol.map =================================================================== --- lib/libc/stdio/Symbol.map +++ lib/libc/stdio/Symbol.map @@ -165,6 +165,7 @@ FBSD_1.4 { fdclose; fopencookie; + fparseln; }; FBSDprivate_1.0 { Index: lib/libc/stdio/fparseln.3 =================================================================== --- lib/libc/stdio/fparseln.3 +++ lib/libc/stdio/fparseln.3 @@ -0,0 +1,156 @@ +.\" $NetBSD: fparseln.3,v 1.7 1999/07/02 15:49:12 simonb Exp $ +.\" $FreeBSD$ +.\" +.\" Copyright (c) 1997 Christos Zoulas. All rights reserved. +.\" +.\" Redistribution and use in source and binary forms, with or without +.\" modification, are permitted provided that the following conditions +.\" are met: +.\" 1. Redistributions of source code must retain the above copyright +.\" notice, this list of conditions and the following disclaimer. +.\" 2. Redistributions in binary form must reproduce the above copyright +.\" notice, this list of conditions and the following disclaimer in the +.\" documentation and/or other materials provided with the distribution. +.\" 3. All advertising materials mentioning features or use of this software +.\" must display the following acknowledgement: +.\" This product includes software developed by Christos Zoulas. +.\" 4. The name of the author may not be used to endorse or promote products +.\" derived from this software without specific prior written permission. +.\" +.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR +.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES +.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. +.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, +.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT +.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, +.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY +.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT +.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF +.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. +.\" +.Dd December 1, 1997 +.Dt FPARSELN 3 +.Os +.Sh NAME +.Nm fparseln +.Nd return the next logical line from a stream +.Sh LIBRARY +.Lb libutil +.Sh SYNOPSIS +.In stdio.h +.Ft "char *" +.Fo fparseln +.Fa "FILE *stream" "size_t *len" "size_t *lineno" +.Fa "const char delim[3]" "int flags" +.Fc +.Sh DESCRIPTION +The +.Fn fparseln +function +returns a pointer to the next logical line from the stream referenced by +.Fa stream . +This string is +.Dv NUL +terminated and it is dynamically allocated on each invocation. +It is the +responsibility of the caller to free the pointer. +.Pp +By default, if a character is escaped, both it and the preceding escape +character will be present in the returned string. +Various +.Fa flags +alter this behaviour. +.Pp +The meaning of the arguments is as follows: +.Bl -tag -width "lineno" +.It Fa stream +The stream to read from. +.It Fa len +If not +.Dv NULL , +the length of the string is stored in the memory location to which it +points. +.It Fa lineno +If not +.Dv NULL , +the value of the memory location to which is pointed to, is incremented +by the number of lines actually read from the file. +.It Fa delim +Contains the escape, continuation, and comment characters. +If a character is +.Dv NUL +then processing for that character is disabled. +If +.Dv NULL , +all characters default to values specified below. +The contents of +.Fa delim +is as follows: +.Bl -tag -width "delim[0]" +.It Fa delim[0] +The escape character, which defaults to +.Cm \e , +is used to remove any special meaning from the next character. +.It Fa delim[1] +The continuation character, which defaults to +.Cm \e , +is used to indicate that the next line should be concatenated with the +current one if this character is the last character on the current line +and is not escaped. +.It Fa delim[2] +The comment character, which defaults to +.Cm # , +if not escaped indicates the beginning of a comment that extends until the +end of the current line. +.El +.It Fa flags +If non-zero, alter the operation of +.Fn fparseln . +The various flags, which may be +.Em or Ns -ed +together, are: +.Bl -tag -width "FPARSELN_UNESCCOMM" +.It Dv FPARSELN_UNESCCOMM +Remove escape preceding an escaped comment. +.It Dv FPARSELN_UNESCCONT +Remove escape preceding an escaped continuation. +.It Dv FPARSELN_UNESCESC +Remove escape preceding an escaped escape. +.It Dv FPARSELN_UNESCREST +Remove escape preceding any other character. +.It Dv FPARSELN_UNESCALL +All of the above. +.El +.El +.Sh RETURN VALUES +Upon successful completion a pointer to the parsed line is returned; +otherwise, +.Dv NULL +is returned. +.Pp +The +.Fn fparseln +function uses internally +.Xr fgetln 3 , +so all error conditions that apply to +.Xr fgetln 3 , +apply to +.Fn fparseln . +In addition +.Fn fparseln +may set +.Va errno +to +.Er ENOMEM +and return +.Dv NULL +if it runs out of memory. +.Sh SEE ALSO +.Xr fgetln 3 +.Sh HISTORY +The +.Fn fparseln +function first appeared in +.Nx 1.4 +and +.Fx 4.0 . Index: lib/libc/stdio/fparseln.c =================================================================== --- lib/libc/stdio/fparseln.c +++ lib/libc/stdio/fparseln.c @@ -0,0 +1,228 @@ +/* $NetBSD: fparseln.c,v 1.7 2007/03/08 19:57:53 drochner Exp $ */ + +/* + * Copyright (c) 1997 Christos Zoulas. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * 3. All advertising materials mentioning features or use of this software + * must display the following acknowledgement: + * This product includes software developed by Christos Zoulas. + * 4. The name of the author may not be used to endorse or promote products + * derived from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR + * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. + * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, + * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT + * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF + * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + */ + +#include +__FBSDID("$FreeBSD$"); + +#include +#include +#include +#include +#include +#include +#include + +static int isescaped(const char *, const char *, int); + +/* isescaped(): + * Return true if the character in *p that belongs to a string + * that starts in *sp, is escaped by the escape character esc. + */ +static int +isescaped(const char *sp, const char *p, int esc) +{ + const char *cp; + size_t ne; + +#if 0 + _DIAGASSERT(sp != NULL); + _DIAGASSERT(p != NULL); +#endif + + /* No escape character */ + if (esc == '\0') + return 0; + + /* Count the number of escape characters that precede ours */ + for (ne = 0, cp = p; --cp >= sp && *cp == esc; ne++) + continue; + + /* Return true if odd number of escape characters */ + return (ne & 1) != 0; +} + + +/* fparseln(): + * Read a line from a file parsing continuations ending in \ + * and eliminating trailing newlines, or comments starting with + * the comment char. + */ +char * +fparseln(FILE *fp, size_t *size, size_t *lineno, const char str[3], int flags) +{ + static const char dstr[3] = { '\\', '\\', '#' }; + + size_t s, len; + char *buf; + char *ptr, *cp; + int cnt; + char esc, con, nl, com; + +#if 0 + _DIAGASSERT(fp != NULL); +#endif + + len = 0; + buf = NULL; + cnt = 1; + + if (str == NULL) + str = dstr; + + esc = str[0]; + con = str[1]; + com = str[2]; + /* + * XXX: it would be cool to be able to specify the newline character, + * but unfortunately, fgetln does not let us + */ + nl = '\n'; + + while (cnt) { + cnt = 0; + + if (lineno) + (*lineno)++; + + if ((ptr = fgetln(fp, &s)) == NULL) + break; + + if (s && com) { /* Check and eliminate comments */ + for (cp = ptr; cp < ptr + s; cp++) + if (*cp == com && !isescaped(ptr, cp, esc)) { + s = cp - ptr; + cnt = s == 0 && buf == NULL; + break; + } + } + + if (s && nl) { /* Check and eliminate newlines */ + cp = &ptr[s - 1]; + + if (*cp == nl) + s--; /* forget newline */ + } + + if (s && con) { /* Check and eliminate continuations */ + cp = &ptr[s - 1]; + + if (*cp == con && !isescaped(ptr, cp, esc)) { + s--; /* forget continuation char */ + cnt = 1; + } + } + + if (s == 0) { + /* + * nothing to add, skip realloc except in case + * we need a minimal buf to return an empty line + */ + if (cnt || buf != NULL) + continue; + } + + if ((cp = realloc(buf, len + s + 1)) == NULL) { + free(buf); + return NULL; + } + buf = cp; + + (void) memcpy(buf + len, ptr, s); + len += s; + buf[len] = '\0'; + } + + if ((flags & FPARSELN_UNESCALL) != 0 && esc && buf != NULL && + strchr(buf, esc) != NULL) { + ptr = cp = buf; + while (cp[0] != '\0') { + int skipesc; + + while (cp[0] != '\0' && cp[0] != esc) + *ptr++ = *cp++; + if (cp[0] == '\0' || cp[1] == '\0') + break; + + skipesc = 0; + if (cp[1] == com) + skipesc += (flags & FPARSELN_UNESCCOMM); + if (cp[1] == con) + skipesc += (flags & FPARSELN_UNESCCONT); + if (cp[1] == esc) + skipesc += (flags & FPARSELN_UNESCESC); + if (cp[1] != com && cp[1] != con && cp[1] != esc) + skipesc = (flags & FPARSELN_UNESCREST); + + if (skipesc) + cp++; + else + *ptr++ = *cp++; + *ptr++ = *cp++; + } + *ptr = '\0'; + len = strlen(buf); + } + + if (size) + *size = len; + return buf; +} + +#ifdef TEST + +int +main(int argc, char *argv[]) +{ + char *ptr; + size_t size, line; + + line = 0; + while ((ptr = fparseln(stdin, &size, &line, NULL, + FPARSELN_UNESCALL)) != NULL) + printf("line %d (%d) |%s|\n", line, size, ptr); + return 0; +} + +/* + +# This is a test +line 1 +line 2 \ +line 3 # Comment +line 4 \# Not comment \\\\ + +# And a comment \ +line 5 \\\ +line 6 + +*/ + +#endif /* TEST */ Index: lib/libutil/Makefile =================================================================== --- lib/libutil/Makefile +++ lib/libutil/Makefile @@ -7,9 +7,9 @@ .include LIB= util -SHLIB_MAJOR= 9 +SHLIB_MAJOR= 10 -SRCS= _secure_path.c auth.c expand_number.c flopen.c fparseln.c gr_util.c \ +SRCS= _secure_path.c auth.c expand_number.c flopen.c gr_util.c \ hexdump.c humanize_number.c kinfo_getfile.c \ kinfo_getallproc.c kinfo_getproc.c kinfo_getvmmap.c \ kinfo_getvmobject.c kld.c \ @@ -27,7 +27,7 @@ CFLAGS+= -I${.CURDIR} -I${.CURDIR}/../libc/gen/ -MAN+= expand_number.3 flopen.3 fparseln.3 hexdump.3 \ +MAN+= expand_number.3 flopen.3 hexdump.3 \ humanize_number.3 kinfo_getallproc.3 kinfo_getfile.3 \ kinfo_getproc.3 kinfo_getvmmap.3 kinfo_getvmobject.3 kld.3 \ login_auth.3 login_cap.3 \ Index: lib/libutil/fparseln.3 =================================================================== --- lib/libutil/fparseln.3 +++ lib/libutil/fparseln.3 @@ -1,157 +0,0 @@ -.\" $NetBSD: fparseln.3,v 1.7 1999/07/02 15:49:12 simonb Exp $ -.\" $FreeBSD$ -.\" -.\" Copyright (c) 1997 Christos Zoulas. All rights reserved. -.\" -.\" Redistribution and use in source and binary forms, with or without -.\" modification, are permitted provided that the following conditions -.\" are met: -.\" 1. Redistributions of source code must retain the above copyright -.\" notice, this list of conditions and the following disclaimer. -.\" 2. Redistributions in binary form must reproduce the above copyright -.\" notice, this list of conditions and the following disclaimer in the -.\" documentation and/or other materials provided with the distribution. -.\" 3. All advertising materials mentioning features or use of this software -.\" must display the following acknowledgement: -.\" This product includes software developed by Christos Zoulas. -.\" 4. The name of the author may not be used to endorse or promote products -.\" derived from this software without specific prior written permission. -.\" -.\" THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR -.\" IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES -.\" OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. -.\" IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, -.\" INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT -.\" NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, -.\" DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY -.\" THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT -.\" (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF -.\" THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. -.\" -.Dd December 1, 1997 -.Dt FPARSELN 3 -.Os -.Sh NAME -.Nm fparseln -.Nd return the next logical line from a stream -.Sh LIBRARY -.Lb libutil -.Sh SYNOPSIS -.In stdio.h -.In libutil.h -.Ft "char *" -.Fo fparseln -.Fa "FILE *stream" "size_t *len" "size_t *lineno" -.Fa "const char delim[3]" "int flags" -.Fc -.Sh DESCRIPTION -The -.Fn fparseln -function -returns a pointer to the next logical line from the stream referenced by -.Fa stream . -This string is -.Dv NUL -terminated and it is dynamically allocated on each invocation. -It is the -responsibility of the caller to free the pointer. -.Pp -By default, if a character is escaped, both it and the preceding escape -character will be present in the returned string. -Various -.Fa flags -alter this behaviour. -.Pp -The meaning of the arguments is as follows: -.Bl -tag -width "lineno" -.It Fa stream -The stream to read from. -.It Fa len -If not -.Dv NULL , -the length of the string is stored in the memory location to which it -points. -.It Fa lineno -If not -.Dv NULL , -the value of the memory location to which is pointed to, is incremented -by the number of lines actually read from the file. -.It Fa delim -Contains the escape, continuation, and comment characters. -If a character is -.Dv NUL -then processing for that character is disabled. -If -.Dv NULL , -all characters default to values specified below. -The contents of -.Fa delim -is as follows: -.Bl -tag -width "delim[0]" -.It Fa delim[0] -The escape character, which defaults to -.Cm \e , -is used to remove any special meaning from the next character. -.It Fa delim[1] -The continuation character, which defaults to -.Cm \e , -is used to indicate that the next line should be concatenated with the -current one if this character is the last character on the current line -and is not escaped. -.It Fa delim[2] -The comment character, which defaults to -.Cm # , -if not escaped indicates the beginning of a comment that extends until the -end of the current line. -.El -.It Fa flags -If non-zero, alter the operation of -.Fn fparseln . -The various flags, which may be -.Em or Ns -ed -together, are: -.Bl -tag -width "FPARSELN_UNESCCOMM" -.It Dv FPARSELN_UNESCCOMM -Remove escape preceding an escaped comment. -.It Dv FPARSELN_UNESCCONT -Remove escape preceding an escaped continuation. -.It Dv FPARSELN_UNESCESC -Remove escape preceding an escaped escape. -.It Dv FPARSELN_UNESCREST -Remove escape preceding any other character. -.It Dv FPARSELN_UNESCALL -All of the above. -.El -.El -.Sh RETURN VALUES -Upon successful completion a pointer to the parsed line is returned; -otherwise, -.Dv NULL -is returned. -.Pp -The -.Fn fparseln -function uses internally -.Xr fgetln 3 , -so all error conditions that apply to -.Xr fgetln 3 , -apply to -.Fn fparseln . -In addition -.Fn fparseln -may set -.Va errno -to -.Er ENOMEM -and return -.Dv NULL -if it runs out of memory. -.Sh SEE ALSO -.Xr fgetln 3 -.Sh HISTORY -The -.Fn fparseln -function first appeared in -.Nx 1.4 -and -.Fx 4.0 . Index: lib/libutil/fparseln.c =================================================================== --- lib/libutil/fparseln.c +++ lib/libutil/fparseln.c @@ -1,228 +0,0 @@ -/* $NetBSD: fparseln.c,v 1.7 2007/03/08 19:57:53 drochner Exp $ */ - -/* - * Copyright (c) 1997 Christos Zoulas. All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. All advertising materials mentioning features or use of this software - * must display the following acknowledgement: - * This product includes software developed by Christos Zoulas. - * 4. The name of the author may not be used to endorse or promote products - * derived from this software without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR - * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES - * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. - * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, - * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT - * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, - * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY - * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT - * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF - * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. - */ - -#include -__FBSDID("$FreeBSD$"); - -#include -#include -#include -#include -#include -#include -#include - -static int isescaped(const char *, const char *, int); - -/* isescaped(): - * Return true if the character in *p that belongs to a string - * that starts in *sp, is escaped by the escape character esc. - */ -static int -isescaped(const char *sp, const char *p, int esc) -{ - const char *cp; - size_t ne; - -#if 0 - _DIAGASSERT(sp != NULL); - _DIAGASSERT(p != NULL); -#endif - - /* No escape character */ - if (esc == '\0') - return 0; - - /* Count the number of escape characters that precede ours */ - for (ne = 0, cp = p; --cp >= sp && *cp == esc; ne++) - continue; - - /* Return true if odd number of escape characters */ - return (ne & 1) != 0; -} - - -/* fparseln(): - * Read a line from a file parsing continuations ending in \ - * and eliminating trailing newlines, or comments starting with - * the comment char. - */ -char * -fparseln(FILE *fp, size_t *size, size_t *lineno, const char str[3], int flags) -{ - static const char dstr[3] = { '\\', '\\', '#' }; - - size_t s, len; - char *buf; - char *ptr, *cp; - int cnt; - char esc, con, nl, com; - -#if 0 - _DIAGASSERT(fp != NULL); -#endif - - len = 0; - buf = NULL; - cnt = 1; - - if (str == NULL) - str = dstr; - - esc = str[0]; - con = str[1]; - com = str[2]; - /* - * XXX: it would be cool to be able to specify the newline character, - * but unfortunately, fgetln does not let us - */ - nl = '\n'; - - while (cnt) { - cnt = 0; - - if (lineno) - (*lineno)++; - - if ((ptr = fgetln(fp, &s)) == NULL) - break; - - if (s && com) { /* Check and eliminate comments */ - for (cp = ptr; cp < ptr + s; cp++) - if (*cp == com && !isescaped(ptr, cp, esc)) { - s = cp - ptr; - cnt = s == 0 && buf == NULL; - break; - } - } - - if (s && nl) { /* Check and eliminate newlines */ - cp = &ptr[s - 1]; - - if (*cp == nl) - s--; /* forget newline */ - } - - if (s && con) { /* Check and eliminate continuations */ - cp = &ptr[s - 1]; - - if (*cp == con && !isescaped(ptr, cp, esc)) { - s--; /* forget continuation char */ - cnt = 1; - } - } - - if (s == 0) { - /* - * nothing to add, skip realloc except in case - * we need a minimal buf to return an empty line - */ - if (cnt || buf != NULL) - continue; - } - - if ((cp = realloc(buf, len + s + 1)) == NULL) { - free(buf); - return NULL; - } - buf = cp; - - (void) memcpy(buf + len, ptr, s); - len += s; - buf[len] = '\0'; - } - - if ((flags & FPARSELN_UNESCALL) != 0 && esc && buf != NULL && - strchr(buf, esc) != NULL) { - ptr = cp = buf; - while (cp[0] != '\0') { - int skipesc; - - while (cp[0] != '\0' && cp[0] != esc) - *ptr++ = *cp++; - if (cp[0] == '\0' || cp[1] == '\0') - break; - - skipesc = 0; - if (cp[1] == com) - skipesc += (flags & FPARSELN_UNESCCOMM); - if (cp[1] == con) - skipesc += (flags & FPARSELN_UNESCCONT); - if (cp[1] == esc) - skipesc += (flags & FPARSELN_UNESCESC); - if (cp[1] != com && cp[1] != con && cp[1] != esc) - skipesc = (flags & FPARSELN_UNESCREST); - - if (skipesc) - cp++; - else - *ptr++ = *cp++; - *ptr++ = *cp++; - } - *ptr = '\0'; - len = strlen(buf); - } - - if (size) - *size = len; - return buf; -} - -#ifdef TEST - -int -main(int argc, char *argv[]) -{ - char *ptr; - size_t size, line; - - line = 0; - while ((ptr = fparseln(stdin, &size, &line, NULL, - FPARSELN_UNESCALL)) != NULL) - printf("line %d (%d) |%s|\n", line, size, ptr); - return 0; -} - -/* - -# This is a test -line 1 -line 2 \ -line 3 # Comment -line 4 \# Not comment \\\\ - -# And a comment \ -line 5 \\\ -line 6 - -*/ - -#endif /* TEST */ Index: lib/libutil/libutil.h =================================================================== --- lib/libutil/libutil.h +++ lib/libutil/libutil.h @@ -138,11 +138,6 @@ * Conditionally prototype the following functions if the include * files upon which they depend have been included. */ -#ifdef _STDIO_H_ -char *fparseln(FILE *_fp, size_t *_len, size_t *_lineno, - const char _delim[3], int _flags); -#endif - #ifdef _PWD_H_ int pw_copy(int _ffd, int _tfd, const struct passwd *_pw, struct passwd *_old_pw); @@ -203,13 +198,6 @@ __END_DECLS -/* fparseln(3) */ -#define FPARSELN_UNESCESC 0x01 -#define FPARSELN_UNESCCONT 0x02 -#define FPARSELN_UNESCCOMM 0x04 -#define FPARSELN_UNESCREST 0x08 -#define FPARSELN_UNESCALL 0x0f - /* Flags for hexdump(3). */ #define HD_COLUMN_MASK 0xff #define HD_DELIM_MASK 0xff00