diff options
| -rw-r--r-- | mdoc.3 | 200 | ||||
| -rw-r--r-- | mdoc.h | 12 | ||||
| -rw-r--r-- | mdocterm.c | 15 | ||||
| -rw-r--r-- | term.c | 1322 |
4 files changed, 1146 insertions, 403 deletions
@@ -1,8 +1,25 @@ +.\" $Id$ +.\" +.\" Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se> +.\" +.\" Permission to use, copy, modify, and distribute this software for any +.\" purpose with or without fee is hereby granted, provided that the +.\" above copyright notice and this permission notice appear in all +.\" copies. +.\" +.\" THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL +.\" WARRANTIES WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED +.\" WARRANTIES OF MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE +.\" AUTHOR BE LIABLE FOR ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL +.\" DAMAGES OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR +.\" PROFITS, WHETHER IN AN ACTION OF CONTRACT, NEGLIGENCE OR OTHER +.\" TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR +.\" PERFORMANCE OF THIS SOFTWARE. .\" .Dd $Mdocdate$ .Dt mdoc 3 .Os -.\" +.\" SECTION .Sh NAME .Nm mdoc_alloc , .Nm mdoc_parseln , @@ -11,7 +28,7 @@ .Nm mdoc_meta , .Nm mdoc_free .Nd mdoc macro compiler library -.\" +.\" SECTION .Sh SYNOPSIS .Fd #include <mdoc.h> .Vt extern const char * const * mdoc_macronames; @@ -28,11 +45,28 @@ .Fn mdoc_meta "struct mdoc *mdoc" .Ft int .Fn mdoc_endparse "struct mdoc *mdoc" -.\" +.\" SECTION .Sh DESCRIPTION The .Nm mdoc -library parses lines of mdoc-macro text into an abstract syntax tree. +library parses lines of mdoc input into an abstract syntax tree. +.Dq mdoc +is a macro package of the +.Dq roff +language, which is used to format BSD manual pages. The +.Nm +library implements only those macros documented in the +.Xr mdoc 7 +and +.Xr mdoc.samples 7 +manuals. +.\" PARAGRAPH +.Pp +.Nm +is +.Ud +.\" PARAGRAPH +.Pp In general, applications initiate a parsing sequence with .Fn mdoc_alloc , parse each line in a document with @@ -48,10 +82,46 @@ then free all allocated memory with See the .Sx EXAMPLES section for a full example. +.\" PARAGRAPH .Pp -.\" Function descriptions. +This section further defines the +.Sx Types , +.Sx Functions +and +.Sx Variables +available to programmers. The last sub-section, +.Sx Abstract Syntax Tree , +documents the output tree. +.\" SUBSECTION +.Ss Types +Both functions (see +.Sx Functions ) +and variables (see +.Sx Variables ) +may use the following types: +.Bl -ohang +.\" LIST-ITEM +.It Vt struct mdoc +An opaque type defined in +.Pa mdoc.c . +Its values are only used privately within the library. +.\" LIST-ITEM +.It Vt struct mdoc_cb +A set of message callbacks defined in +.Pa mdoc.h . +.\" LIST-ITEM +.It Vt struct mdoc_node +A parsed node. Defined in +.Pa mdoc.h . +See +.Sx Abstract Syntax Tree +for details. +.El +.\" SUBSECTION +.Ss Functions Function descriptions follow: -.Bl -ohang -offset indent +.Bl -ohang +.\" LIST-ITEM .It Fn mdoc_alloc Allocates a parsing structure. The .Fa data @@ -60,20 +130,24 @@ pointer is passed to callbacks in which are documented further in the header file. Returns NULL on failure. If non-NULL, the pointer must be freed with .Fn mdoc_free . +.\" LIST-ITEM .It Fn mdoc_free Free all resources of a parser. The pointer is no longer valid after invocation. +.\" LIST-ITEM .It Fn mdoc_parseln Parse a nil-terminated line of input. This line should not contain the trailing newline. Returns 0 on failure, 1 on success. The input buffer .Fa buf is modified by this function. +.\" LIST-ITEM .It Fn mdoc_endparse Signals that the parse is complete. Note that if .Fn mdoc_endparse is called subsequent to .Fn mdoc_node , the resulting tree is incomplete. Returns 0 on failure, 1 on success. +.\" LIST-ITEM .It Fn mdoc_node Returns the first node of the parse. Note that if .Fn mdoc_parseln @@ -88,20 +162,108 @@ or .Fn mdoc_endparse return 0, the data will be incomplete. .El -.Pp -.\" Variable descriptions. +.\" SUBSECTION +.Ss Variables The following variables are also defined: -.Bl -ohang -offset indent +.Bl -ohang +.\" LIST-ITEM .It Va mdoc_macronames An array of string-ified token names. +.\" LIST-ITEM .It Va mdoc_argnames An array of string-ified token argument names. .El -.Pp +.\" SUBSECTION +.Ss Abstract Syntax Tree +The .Nm -is -.Ud -.\" +functions produce an abstract syntax tree (AST) describing the input +lines in a regular form. It may be reviewed at any time with +.Fn mdoc_nodes ; +however, if called before +.Fn mdoc_endparse , +or after +.Fn mdoc_endparse +or +.Fn mdoc_parseln +fail, it may be incomplete. +.\" PARAGRAPH +.Pp +The AST is composed of +.Vt struct mdoc_node +nodes with block, head, body, element, root and text types as declared +by the +.Va type +field. Each node also provides its parse point (the +.Va line , +.Va sec , +and +.Va pos +fields), its position in the tree (the +.Va parent , +.Va child , +.Va next +and +.Va prev +fields) and type-specific data (the +.Va data +field). +.\" PARAGRAPH +.Pp +The tree itself is arranged according to the following normal form, +where capitalised non-terminals represent nodes. +.Pp +.Bl -tag -width "ELEMENTXX" -compact +.\" LIST-ITEM +.It ROOT +\(<- mnode+ +.It mnode +\(<- BLOCK | ELEMENT | TEXT +.It BLOCK +\(<- (HEAD [TEXT])+ [BODY [TEXT]] [TAIL [TEXT]] +.It BLOCK +\(<- BODY [TEXT] [TAIL [TEXT]] +.It ELEMENT +\(<- TEXT* +.It HEAD +\(<- mnode+ +.It BODY +\(<- mnode+ +.It TAIL +\(<- mnode+ +.It TEXT +\(<- [[:alpha:]]* +.El +.\" PARAGRAPH +.Pp +Of note are the TEXT nodes following the HEAD, BODY and TAIL nodes of +the BLOCK production. These refer to punctuation marks. Furthermore, +although a TEXT node will generally have a non-zero-length string, it +certain cases, such as +.Dq \&.Bd \-literal , +an empty line will produce a zero-length string. +.\" PARAGRAPH +.Pp +The rule-of-thumb for mapping node types to macros follows: in-line +elements, such as +.Dq \&.Em foo , +are classified as ELEMENT nodes, which can only contain text. +Multi-line elements such as +.Dq \&.Sh +are BLOCK elements, where the HEAD constitutes line contents and the +BODY constitutes subsequent lines. In-line elements with matching +pairs, such as +.Dq \&.So +and +.Dq \&.Sc , +are BLOCK elements with no HEAD tag. The only exception to this is +.Dq \&.Eo +and +.Dq \&.Ec , +which has a HEAD and TAIL node corresponding to the enclosure string. +TEXT nodes, obviously, constitute text; the ROOT node is the document's +root. +.\" SECTION .Sh EXAMPLES The following example reads lines from stdin and parses them, operating on the finished parse tree with @@ -135,21 +297,19 @@ if (NULL == (node = mdoc_node(mdoc))) parsed(mdoc, node); mdoc_free(mdoc); .Ed -.\" +.\" SECTION .Sh SEE ALSO .Xr mdoc 7 , .Xr mdoc.samples 7 , .Xr groff 1 , .Xr mdocml 1 -.\" -.\" +.\" SECTION .Sh AUTHORS The .Nm utility was written by .An Kristaps Dzonsons Aq kristaps@kth.se . -.\" -.\" +.\" SECTION .Sh BUGS Bugs, un-implemented macros and incompabilities are documented in this section. The baseline for determining whether macro parsing is @@ -189,4 +349,6 @@ for .Ox are supported; support for .Nx -and other BSD systems is in progress. +and other +.Bx +systems is in progress. @@ -19,6 +19,14 @@ #ifndef MDOC_H #define MDOC_H +/* + * This library implements a validating scanner/parser for ``mdoc'' roff + * macro documents, a.k.a. BSD manual page documents. The mdoc.c file + * drives the parser, while macro.c describes the macro ontologies. + * validate.c pre- and post-validates parsed macros, and action.c + * performs actions on parsed and validated macros. + */ + /* What follows is a list of ALL possible macros. */ #define MDOC___ 0 @@ -421,12 +429,10 @@ const struct mdoc_meta *mdoc_meta(const struct mdoc *); /* Signal end of parse sequence (boolean retval). */ int mdoc_endparse(struct mdoc *); +/* The following are utility functions. */ const char *mdoc_arch2a(enum mdoc_arch); - const char *mdoc_vol2a(enum mdoc_vol); - const char *mdoc_msec2a(enum mdoc_msec); - int mdoc_isdelim(const char *); __END_DECLS @@ -45,6 +45,7 @@ static void pword(struct termp *, const char *, size_t); static void pescape(struct termp *, const char *, size_t *, size_t); static void chara(struct termp *, char); +static void stringa(struct termp *, const char *); static void style(struct termp *, enum termstyle); #ifdef __linux__ @@ -231,6 +232,16 @@ vspace(struct termp *p) static void +stringa(struct termp *p, const char *s) +{ + + /* XXX - speed up if not passing to chara. */ + for ( ; *s; s++) + chara(p, *s); +} + + +static void chara(struct termp *p, char c) { @@ -284,6 +295,10 @@ pescape(struct termp *p, const char *word, size_t *i, size_t len) chara(p, ']'); else if ('l' == word[*i] && 'B' == word[*i + 1]) chara(p, '['); + else if ('<' == word[*i] && '-' == word[*i + 1]) + stringa(p, "<-"); + else if ('-' == word[*i] && '>' == word[*i + 1]) + stringa(p, "->"); (*i)++; return; @@ -1,6 +1,6 @@ /* $Id$ */ /* - * Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se> + * Copyright (c) 2009 Kristaps Dzonsons <kristaps@kth.se> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the @@ -17,527 +17,1087 @@ * PERFORMANCE OF THIS SOFTWARE. */ #include <assert.h> -#include <ctype.h> -#include <err.h> #include <stdlib.h> -#include <stdio.h> #include <string.h> -#include <unistd.h> - -#ifdef __linux__ -#include <time.h> -#endif #include "term.h" -enum termstyle { - STYLE_CLEAR, - STYLE_BOLD, - STYLE_UNDERLINE +#define INDENT 4 + +/* + * Performs actions on nodes of the abstract syntax tree. Both pre- and + * post-fix operations are defined here. + */ + +/* FIXME: indent/tab. */ + +#define TTYPE_PROG 0 +#define TTYPE_CMD_FLAG 1 +#define TTYPE_CMD_ARG 2 +#define TTYPE_SECTION 3 +#define TTYPE_FUNC_DECL 4 +#define TTYPE_VAR_DECL 5 +#define TTYPE_FUNC_TYPE 6 +#define TTYPE_FUNC_NAME 7 +#define TTYPE_FUNC_ARG 8 +#define TTYPE_LINK 9 +#define TTYPE_SSECTION 10 +#define TTYPE_FILE 11 +#define TTYPE_NMAX 12 + +/* + * These define "styles" for element types, like command arguments or + * executable names. This is useful when multiple macros must decorate + * the same thing (like .Ex -std cmd and .Nm cmd). + */ + +const int ttypes[TTYPE_NMAX] = { + TERMP_BOLD, /* TTYPE_PROG */ + TERMP_BOLD, /* TTYPE_CMD_FLAG */ + TERMP_UNDERLINE, /* TTYPE_CMD_ARG */ + TERMP_BOLD, /* TTYPE_SECTION */ + TERMP_BOLD, /* TTYPE_FUNC_DECL */ + TERMP_UNDERLINE, /* TTYPE_VAR_DECL */ + TERMP_UNDERLINE, /* TTYPE_FUNC_TYPE */ + TERMP_BOLD, /* TTYPE_FUNC_NAME */ + TERMP_UNDERLINE, /* TTYPE_FUNC_ARG */ + TERMP_UNDERLINE, /* TTYPE_LINK */ + TERMP_BOLD, /* TTYPE_SSECTION */ + TERMP_UNDERLINE /* TTYPE_FILE */ }; -static void termprint_r(struct termp *, - const struct mdoc_meta *, - const struct mdoc_node *); -static void termprint_header(struct termp *, - const struct mdoc_meta *); -static void termprint_footer(struct termp *, - const struct mdoc_meta *); +static int arg_hasattr(int, size_t, + const struct mdoc_arg *); +static int arg_getattr(int, size_t, + const struct mdoc_arg *); +static size_t arg_offset(const char *); -static void pword(struct termp *, const char *, size_t); -static void pescape(struct termp *, - const char *, size_t *, size_t); -static void chara(struct termp *, char); -static void style(struct termp *, enum termstyle); +/* + * What follows describes prefix and postfix operations for the abstract + * syntax tree descent. + */ + +#define DECL_ARGS \ + struct termp *p, \ + const struct mdoc_meta *meta, \ + const struct mdoc_node *node + +#define DECL_PRE(name) \ +static int name##_pre(DECL_ARGS) +#define DECL_POST(name) \ +static void name##_post(DECL_ARGS) +#define DECL_PREPOST(name) \ +DECL_PRE(name); \ +DECL_POST(name); + +DECL_PREPOST(termp_aq); +DECL_PREPOST(termp_ar); +DECL_PREPOST(termp_d1); +DECL_PREPOST(termp_dq); +DECL_PREPOST(termp_fa); +DECL_PREPOST(termp_fd); +DECL_PREPOST(termp_fl); +DECL_PREPOST(termp_fn); +DECL_PREPOST(termp_ft); +DECL_PREPOST(termp_it); +DECL_PREPOST(termp_nm); +DECL_PREPOST(termp_op); +DECL_PREPOST(termp_pa); +DECL_PREPOST(termp_pf); +DECL_PREPOST(termp_qq); +DECL_PREPOST(termp_sh); +DECL_PREPOST(termp_ss); +DECL_PREPOST(termp_sq); +DECL_PREPOST(termp_sx); +DECL_PREPOST(termp_va); +DECL_PREPOST(termp_vt); + +DECL_PRE(termp_bd); +DECL_PRE(termp_bx); +DECL_PRE(termp_ex); +DECL_PRE(termp_nd); +DECL_PRE(termp_ns); +DECL_PRE(termp_nx); +DECL_PRE(termp_ox); +DECL_PRE(termp_pp); +DECL_PRE(termp_ud); +DECL_PRE(termp_xr); + +DECL_POST(termp_bl); + +const struct termact __termacts[MDOC_MAX] = { + { NULL, NULL }, /* \" */ + { NULL, NULL }, /* Dd */ + { NULL, NULL }, /* Dt */ + { NULL, NULL }, /* Os */ + { termp_sh_pre, termp_sh_post }, /* Sh */ + { termp_ss_pre, termp_ss_post }, /* Ss */ + { termp_pp_pre, NULL }, /* Pp */ + { termp_d1_pre, termp_d1_post }, /* D1 */ + { NULL, NULL }, /* Dl */ + { termp_bd_pre, NULL }, /* Bd */ + { NULL, NULL }, /* Ed */ + { NULL, termp_bl_post }, /* Bl */ + { NULL, NULL }, /* El */ + { termp_it_pre, termp_it_post }, /* It */ + { NULL, NULL }, /* Ad */ + { NULL, NULL }, /* An */ + { termp_ar_pre, termp_ar_post }, /* Ar */ + { NULL, NULL }, /* Cd */ + { NULL, NULL }, /* Cm */ + { NULL, NULL }, /* Dv */ + { NULL, NULL }, /* Er */ + { NULL, NULL }, /* Ev */ + { termp_ex_pre, NULL }, /* Ex */ + { termp_fa_pre, termp_fa_post }, /* Fa */ + { termp_fd_pre, termp_fd_post }, /* Fd */ + { termp_fl_pre, termp_fl_post }, /* Fl */ + { termp_fn_pre, termp_fn_post }, /* Fn */ + { termp_ft_pre, termp_ft_post }, /* Ft */ + { NULL, NULL }, /* Ic */ + { NULL, NULL }, /* In */ + { NULL, NULL }, /* Li */ + { termp_nd_pre, NULL }, /* Nd */ + { termp_nm_pre, termp_nm_post }, /* Nm */ + { termp_op_pre, termp_op_post }, /* Op */ + { NULL, NULL }, /* Ot */ + { termp_pa_pre, termp_pa_post }, /* Pa */ + { NULL, NULL }, /* Rv */ + { NULL, NULL }, /* St */ + { termp_va_pre, termp_va_post }, /* Va */ + { termp_vt_pre, termp_vt_post }, /* Vt */ + { termp_xr_pre, NULL }, /* Xr */ + { NULL, NULL }, /* %A */ + { NULL, NULL }, /* %B */ + { NULL, NULL }, /* %D */ + { NULL, NULL }, /* %I */ + { NULL, NULL }, /* %J */ + { NULL, NULL }, /* %N */ + { NULL, NULL }, /* %O */ + { NULL, NULL }, /* %P */ + { NULL, NULL }, /* %R */ + { NULL, NULL }, /* %T */ + { NULL, NULL }, /* %V */ + { NULL, NULL }, /* Ac */ + { NULL, NULL }, /* Ao */ + { termp_aq_pre, termp_aq_post }, /* Aq */ + { NULL, NULL }, /* At */ + { NULL, NULL }, /* Bc */ + { NULL, NULL }, /* Bf */ + { NULL, NULL }, /* Bo */ + { NULL, NULL }, /* Bq */ + { NULL, NULL }, /* Bsx */ + { termp_bx_pre, NULL }, /* Bx */ + { NULL, NULL }, /* Db */ + { NULL, NULL }, /* Dc */ + { NULL, NULL }, /* Do */ + { termp_dq_pre, termp_dq_post }, /* Dq */ + { NULL, NULL }, /* Ec */ + { NULL, NULL }, /* Ef */ + { NULL, NULL }, /* Em */ + { NULL, NULL }, /* Eo */ + { NULL, NULL }, /* Fx */ + { NULL, NULL }, /* Ms */ + { NULL, NULL }, /* No */ + { termp_ns_pre, NULL }, /* Ns */ + { termp_nx_pre, NULL }, /* Nx */ + { termp_ox_pre, NULL }, /* Ox */ + { NULL, NULL }, /* Pc */ + { termp_pf_pre, termp_pf_post }, /* Pf */ + { NULL, NULL }, /* Po */ + { NULL, NULL }, /* Pq */ + { NULL, NULL }, /* Qc */ + { NULL, NULL }, /* Ql */ + { NULL, NULL }, /* Qo */ + { termp_qq_pre, termp_qq_post }, /* Qq */ + { NULL, NULL }, /* Re */ + { NULL, NULL }, /* Rs */ + { NULL, NULL }, /* Sc */ + { NULL, NULL }, /* So */ + { termp_sq_pre, termp_sq_post }, /* Sq */ + { NULL, NULL }, /* Sm */ + { termp_sx_pre, termp_sx_post }, /* Sx */ + { NULL, NULL }, /* Sy */ + { NULL, NULL }, /* Tn */ + { NULL, NULL }, /* Ux */ + { NULL, NULL }, /* Xc */ + { NULL, NULL }, /* Xo */ + { NULL, NULL }, /* Fo */ + { NULL, NULL }, /* Fc */ + { NULL, NULL }, /* Oo */ + { NULL, NULL }, /* Oc */ + { NULL, NULL }, /* Bk */ + { NULL, NULL }, /* Ek */ + { NULL, NULL }, /* Bt */ + { NULL, NULL }, /* Hf */ + { NULL, NULL }, /* Fr */ + { termp_ud_pre, NULL }, /* Ud */ +}; -#ifdef __linux__ -extern size_t strlcat(char *, const char *, size_t); -extern size_t strlcpy(char *, const char *, size_t); -#endif +const struct termact *termacts = __termacts; -void -flushln(struct termp *p) + +static size_t +arg_offset(const char *v) { - size_t i, j, vsz, vis, maxvis; + if (0 == strcmp(v, "indent")) + return(INDENT); + if (0 == strcmp(v, "indent-two")) + return(INDENT * 2); - /* - * First, establish the maximum columns of "visible" content. - * This is usually the difference between the right-margin and - * an indentation, but can be, for tagged lists or columns, a - * small set of values. - */ + /* TODO */ + return(0); +} - assert(p->offset < p->rmargin); - maxvis = p->rmargin - p->offset; - vis = 0; - /* - * If in the standard case (left-justified), then begin with our - * indentation, otherwise (columns, etc.) just start spitting - * out text. - */ +static int +arg_hasattr(int arg, size_t argc, const struct mdoc_arg *argv) +{ + + return(-1 != arg_getattr(arg, argc, argv)); +} + + +static int +arg_getattr(int arg, size_t argc, const struct mdoc_arg *argv) +{ + int i; + + for (i = 0; i < (int)argc; i++) + if (argv[i].arg == arg) + return(i); + return(-1); +} + + +/* ARGSUSED */ +static int +termp_dq_pre(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) + return(1); + + word(p, "``"); + p->flags |= TERMP_NOSPACE; + return(1); +} + + +/* ARGSUSED */ +static void +termp_dq_post(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) + return; + + p->flags |= TERMP_NOSPACE; + word(p, "''"); +} - if ( ! (p->flags & TERMP_NOLPAD)) - /* LINTED */ - for (j = 0; j < p->offset; j++) - putchar(' '); + +/* ARGSUSED */ +static void +termp_it_post(DECL_ARGS) +{ + const struct mdoc_node *n, *it; + const struct mdoc_block *bl; + int i; + size_t width; /* - * If we're literal, print out verbatim. + * This (and termp_it_pre()) are the most complicated functions + * here. They must account for a considerable number of + * switches that completely change the output behaviour, like + * -tag versus -column. Yech. */ - if (p->flags & TERMP_LITERAL) { - /* FIXME: count non-printing chars. */ - for (i = 0; i < p->col; i++) - putchar(p->buf[i]); - putchar('\n'); - p->col = 0; + + switch (node->type) { + case (MDOC_BODY): + /* FALLTHROUGH */ + case (MDOC_HEAD): + break; + default: return; } - for (i = 0; i < p->col; i++) { - /* - * Count up visible word characters. Control sequences - * (starting with the CSI) aren't counted. - */ - assert( ! isspace(p->buf[i])); - - /* LINTED */ - for (j = i, vsz = 0; j < p->col; j++) { - if (isspace(p->buf[j])) - break; - else if (27 == p->buf[j]) { - assert(j + 4 <= p->col); - j += 3; - } else - vsz++; - } - assert(vsz > 0); - - /* - * If a word is too long and we're within a line, put it - * on the next line. Puke if we're being asked to write - * something that will exceed the right margin (i.e., - * from a fresh line or when we're not allowed to break - * the line with TERMP_NOBREAK). - */ - - if (vis && vis + vsz >= maxvis) { - /* FIXME */ - if (p->flags & TERMP_NOBREAK) - errx(1, "word breaks right margin"); - putchar('\n'); - for (j = 0; j < p->offset; j++) - putchar(' '); - vis = 0; - } else if (vis + vsz >= maxvis) { - /* FIXME */ - errx(1, "word breaks right margin"); + it = node->parent; + assert(MDOC_BLOCK == it->type); + assert(MDOC_It == it->tok); + + n = it->parent; + assert(MDOC_BODY == n->type); + assert(MDOC_Bl == n->tok); + n = n->parent; + bl = &n->data.block; + + /* If `-tag', adjust our margins accordingly. */ + + if (arg_hasattr(MDOC_Tag, bl->argc, bl->argv)) { + i = arg_getattr(MDOC_Width, bl->argc, bl->argv); + assert(i >= 0); + assert(1 == bl->argv[i].sz); + width = strlen(*bl->argv[i].value); /* XXX */ + + if (MDOC_HEAD == node->type) { + flushln(p); + /* FIXME: nested lists. */ + p->rmargin = p->maxrmargin; + p->flags &= ~TERMP_NOBREAK; + } else { + flushln(p); + p->offset -= width + 1; + p->flags &= ~TERMP_NOLPAD; } + return; + } - /* - * Write out the word and a trailing space. Omit the - * space if we're the last word in the line. - */ - - for ( ; i < p->col; i++) { - if (isspace(p->buf[i])) - break; - putchar(p->buf[i]); - } - vis += vsz; - if (i < p->col) { - putchar(' '); - vis++; + if (arg_hasattr(MDOC_Ohang, bl->argc, bl->argv)) { + i = arg_getattr(MDOC_Offset, bl->argc, bl->argv); + width = 0; + if (i >= 0) { + assert(1 == bl->argv[i].sz); + width = arg_offset(*bl->argv[i].value); } + + flushln(p); + p->offset -= width; + return; } +} + + +/* ARGSUSED */ +static int +termp_it_pre(DECL_ARGS) +{ + const struct mdoc_node *n, *it; + const struct mdoc_block *bl; + int i; + size_t width; /* - * If we're not to right-marginalise it (newline), then instead - * pad to the right margin and stay off. + * Also see termp_it_post() for general comments. */ - if (p->flags & TERMP_NOBREAK) { - for ( ; vis <= maxvis; vis++) - putchar(' '); - } else - putchar('\n'); + switch (node->type) { + case (MDOC_BODY): + /* FALLTHROUGH */ + case (MDOC_HEAD): + it = node->parent; + break; + case (MDOC_BLOCK): + it = node; + break; + default: + return(1); + } + + assert(MDOC_BLOCK == it->type); + assert(MDOC_It == it->tok); + + n = it->parent; + assert(MDOC_BODY == n->type); + assert(MDOC_Bl == n->tok); + n = n->parent; + bl = &n->data.block; + + /* If `-compact', don't assert vertical space. */ + + if (MDOC_BLOCK == node->type) { + if (arg_hasattr(MDOC_Compact, bl->argc, bl->argv)) + newln(p); + else + vspace(p); + return(1); + } + + assert(MDOC_HEAD == node->type + || MDOC_BODY == node->type); + + /* If `-tag', adjust our margins accordingly. */ + + if (arg_hasattr(MDOC_Tag, bl->argc, bl->argv)) { + i = arg_getattr(MDOC_Width, bl->argc, bl->argv); + assert(i >= 0); /* XXX */ + assert(1 == bl->argv[i].sz); + width = strlen(*bl->argv[i].value); /* XXX */ + + /* FIXME: nested lists. */ - p->col = 0; + if (MDOC_HEAD == node->type) { + p->flags |= TERMP_NOBREAK; + p->flags |= TERMP_NOSPACE; + p->rmargin = p->offset + width; + } else { + p->flags |= TERMP_NOSPACE; + p->flags |= TERMP_NOLPAD; + p->offset += width + 1; + } + return(1); + } + + /* If `-ohang', adjust left-margin. */ + + if (arg_hasattr(MDOC_Ohang, bl->argc, bl->argv)) { + width = 0; + i = arg_getattr(MDOC_Offset, bl->argc, bl->argv); + if (i >= 0) { + assert(1 == bl->argv[i].sz); + width = arg_offset(*bl->argv[i].value); + } + + p->flags |= TERMP_NOSPACE; + p->offset += width; + return(1); + } + + return(1); } -void -newln(struct termp *p) +/* ARGSUSED */ +static void +termp_nm_post(DECL_ARGS) +{ + + p->flags &= ~ttypes[TTYPE_PROG]; +} + + +/* ARGSUSED */ +static void +termp_fl_post(DECL_ARGS) +{ + + p->flags &= ~ttypes[TTYPE_CMD_FLAG]; +} + + +/* ARGSUSED */ +static int +termp_ar_pre(DECL_ARGS) +{ + + p->flags |= ttypes[TTYPE_CMD_ARG]; + if (NULL == node->child) + word(p, "..."); + return(1); +} + + +/* ARGSUSED */ +static int +termp_nm_pre(DECL_ARGS) +{ + + p->flags |= ttypes[TTYPE_PROG]; + if (NULL == node->child) + word(p, meta->name); + return(1); +} + + +/* ARGSUSED */ +static int +termp_ns_pre(DECL_ARGS) { - /* - * A newline only breaks an existing line; it won't assert - * vertical space. - */ p->flags |= TERMP_NOSPACE; - if (0 == p->col) + return(1); +} + + +/* ARGSUSED */ +static int +termp_pp_pre(DECL_ARGS) +{ + + vspace(p); + return(1); +} + + +/* ARGSUSED */ +static void +termp_ar_post(DECL_ARGS) +{ + + p->flags &= ~ttypes[TTYPE_CMD_ARG]; +} + + +/* ARGSUSED */ +static int +termp_ex_pre(DECL_ARGS) +{ + int i; + + i = arg_getattr(MDOC_Std, node->data.elem.argc, + node->data.elem.argv); + assert(i >= 0); + + word(p, "The"); + p->flags |= ttypes[TTYPE_PROG]; + word(p, *node->data.elem.argv[i].value); + p->flags &= ~ttypes[TTYPE_PROG]; + word(p, "utility exits 0 on success, and >0 if an error occurs."); + + return(1); +} + + +/* ARGSUSED */ +static int +termp_nd_pre(DECL_ARGS) +{ + + word(p, "\\-"); + return(1); +} + + +/* ARGSUSED */ +static void +termp_bl_post(DECL_ARGS) +{ + + if (MDOC_BLOCK == node->type) + newln(p); +} + + +/* ARGSUSED */ +static void +termp_op_post(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) return; - flushln(p); + p->flags |= TERMP_NOSPACE; + word(p, "\\(rB"); +} + + +/* ARGSUSED */ +static void +termp_sh_post(DECL_ARGS) +{ + + switch (node->type) { + case (MDOC_HEAD): + p->flags &= ~ttypes[TTYPE_SECTION]; + newln(p); + break; + case (MDOC_BODY): + newln(p); + p->offset = 0; + break; + default: + break; + } } -void -vspace(struct termp *p) +/* ARGSUSED */ +static int +termp_xr_pre(DECL_ARGS) { + const struct mdoc_node *n; - /* - * Asserts a vertical space (a full, empty line-break between - * lines). - */ - newln(p); - putchar('\n'); + n = node->child; + assert(n); + + assert(MDOC_TEXT == n->type); + word(p, n->data.text.string); + + if (NULL == (n = n->next)) + return(0); + + assert(MDOC_TEXT == n->type); + p->flags |= TERMP_NOSPACE; + word(p, "("); + p->flags |= TERMP_NOSPACE; + word(p, n->data.text.string); + p->flags |= TERMP_NOSPACE; + word(p, ")"); + + return(0); } +/* ARGSUSED */ +static int +termp_vt_pre(DECL_ARGS) +{ + + /* FIXME: this can be "type name". */ + p->flags |= ttypes[TTYPE_VAR_DECL]; + return(1); +} + + +/* ARGSUSED */ static void -chara(struct termp *p, char c) +termp_vt_post(DECL_ARGS) { - /* TODO: dynamically expand the buffer. */ - if (p->col + 1 >= p->maxcols) - errx(1, "line overrun"); - p->buf[(p->col)++] = c; + p->flags &= ~ttypes[TTYPE_VAR_DECL]; + if (node->sec == SEC_SYNOPSIS) + vspace(p); } +/* ARGSUSED */ +static int +termp_fd_pre(DECL_ARGS) +{ + + /* + * FIXME: this naming is bad. This value is used, in general, + * for the #include header or other preprocessor statement. + */ + p->flags |= ttypes[TTYPE_FUNC_DECL]; + return(1); +} + + +/* ARGSUSED */ static void -style(struct termp *p, enum termstyle esc) +termp_fd_post(DECL_ARGS) { - if (p->col + 4 >= p->maxcols) - errx(1, "line overrun"); + p->flags &= ~ttypes[TTYPE_FUNC_DECL]; + if (node->sec == SEC_SYNOPSIS) + vspace(p); + +} + + +/* ARGSUSED */ +static int +termp_sh_pre(DECL_ARGS) +{ - p->buf[(p->col)++] = 27; - p->buf[(p->col)++] = '['; - switch (esc) { - case (STYLE_CLEAR): - p->buf[(p->col)++] = '0'; + switch (node->type) { + case (MDOC_HEAD): + vspace(p); + p->flags |= ttypes[TTYPE_SECTION]; break; - case (STYLE_BOLD): - p->buf[(p->col)++] = '1'; + case (MDOC_BODY): + p->offset = INDENT; break; - case (STYLE_UNDERLINE): - p->buf[(p->col)++] = '4'; + default: + break; + } + return(1); +} + + +/* ARGSUSED */ +static int +termp_op_pre(DECL_ARGS) +{ + + switch (node->type) { + case (MDOC_BODY): + word(p, "\\(lB"); + p->flags |= TERMP_NOSPACE; break; default: - abort(); - /* NOTREACHED */ + break; } - p->buf[(p->col)++] = 'm'; + return(1); } -static void -pescape(struct termp *p, const char *word, size_t *i, size_t len) +/* ARGSUSED */ +static int +termp_ud_pre(DECL_ARGS) +{ + + word(p, "currently under development."); + return(1); +} + + +/* ARGSUSED */ +static int +termp_fl_pre(DECL_ARGS) { - (*i)++; - assert(*i < len); + p->flags |= ttypes[TTYPE_CMD_FLAG]; + word(p, "\\-"); + p->flags |= TERMP_NOSPACE; + return(1); +} + + +/* ARGSUSED */ +static int +termp_d1_pre(DECL_ARGS) +{ - if ('(' == word[*i]) { - /* Two-character escapes. */ - (*i)++; - assert(*i + 1 < len); + if (MDOC_BODY != node->type) + return(1); + newln(p); + p->offset += INDENT; + return(1); +} - if ('r' == word[*i] && 'B' == word[*i + 1]) - chara(p, ']'); - else if ('l' == word[*i] && 'B' == word[*i + 1]) - chara(p, '['); - (*i)++; +/* ARGSUSED */ +static void +termp_d1_post(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) return; + newln(p); + p->offset -= INDENT; +} - } else if ('[' != word[*i]) { - /* One-character escapes. */ - switch (word[*i]) { - case ('\\'): - /* FALLTHROUGH */ - case ('\''): - /* FALLTHROUGH */ - case ('`'): - /* FALLTHROUGH */ - case ('-'): - /* FALLTHROUGH */ - case ('.'): - chara(p, word[*i]); - default: - break; - } + +/* ARGSUSED */ +static int +termp_aq_pre(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) + return(1); + word(p, "<"); + p->flags |= TERMP_NOSPACE; + return(1); +} + + +/* ARGSUSED */ +static void +termp_aq_post(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) return; - } - /* n-character escapes. */ + p->flags |= TERMP_NOSPACE; + word(p, ">"); +} + + +/* ARGSUSED */ +static int +termp_ft_pre(DECL_ARGS) +{ + + p->flags |= ttypes[TTYPE_FUNC_TYPE]; + return(1); } +/* ARGSUSED */ static void -pword(struct termp *p, const char *word, size_t len) +termp_ft_post(DECL_ARGS) { - size_t i; - /*assert(len > 0);*/ /* Can be, if literal. */ + p->flags &= ~ttypes[TTYPE_FUNC_TYPE]; + if (node->sec == SEC_SYNOPSIS) + newln(p); - if ( ! (p->flags & TERMP_NOSPACE) && - ! (p->flags & TERMP_LITERAL)) - chara(p, ' '); +} - p->flags &= ~TERMP_NOSPACE; - if (p->flags & TERMP_BOLD) - style(p, STYLE_BOLD); - if (p->flags & TERMP_UNDERLINE) - style(p, STYLE_UNDERLINE); +/* ARGSUSED */ +static int +termp_fn_pre(DECL_ARGS) +{ + const struct mdoc_node *n; - for (i = 0; i < len; i++) { - if ('\\' == word[i]) { - pescape(p, word, &i, len); - continue; - } - chara(p, word[i]); + assert(node->child); + assert(MDOC_TEXT == node->child->type); + + /* FIXME: can be "type funcname" "type varname"... */ + + p->flags |= ttypes[TTYPE_FUNC_NAME]; + word(p, node->child->data.text.string); + p->flags &= ~ttypes[TTYPE_FUNC_NAME]; + + p->flags |= TERMP_NOSPACE; + word(p, "("); + + p->flags |= TERMP_NOSPACE; + for (n = node->child->next; n; n = n->next) { + assert(MDOC_TEXT == n->type); + p->flags |= ttypes[TTYPE_FUNC_ARG]; + word(p, n->data.text.string); + p->flags &= ~ttypes[TTYPE_FUNC_ARG]; + if ((n->next)) + word(p, ","); } - if (p->flags & TERMP_BOLD || - p->flags & TERMP_UNDERLINE) - style(p, STYLE_CLEAR); + p->flags |= TERMP_NOSPACE; + word(p, ")"); + + if (SEC_SYNOPSIS == node->sec) + word(p, ";"); + + return(0); } -void -word(struct termp *p, const char *word) +/* ARGSUSED */ +static void +termp_fn_post(DECL_ARGS) { - size_t i, j, len; - if (p->flags & TERMP_LITERAL) { - pword(p, word, strlen(word)); - return; - } + if (node->sec == SEC_SYNOPSIS) + vspace(p); - len = strlen(word); - assert(len > 0); +} - if (mdoc_isdelim(word)) { - if ( ! (p->flags & TERMP_IGNDELIM)) - p->flags |= TERMP_NOSPACE; - p->flags &= ~TERMP_IGNDELIM; - } - /* LINTED */ - for (j = i = 0; i < len; i++) { - if ( ! isspace(word[i])) { - j++; - continue; - } - if (0 == j) - continue; - assert(i >= j); - pword(p, &word[i - j], j); - j = 0; - } - if (j > 0) { - assert(i >= j); - pword(p, &word[i - j], j); - } +/* ARGSUSED */ +static int +termp_sx_pre(DECL_ARGS) +{ + + p->flags |= ttypes[TTYPE_LINK]; + return(1); } +/* ARGSUSED */ static void -termprint_r(struct termp *p, const struct mdoc_meta *meta, - const struct mdoc_node *node) +termp_sx_post(DECL_ARGS) { - int dochild; - /* Pre-processing. */ + p->flags &= ~ttypes[TTYPE_LINK]; +} + - dochild = 1; +/* ARGSUSED */ +static int +termp_fa_pre(DECL_ARGS) +{ - if (MDOC_TEXT != node->type) { - if (termacts[node->tok].pre) - if ( ! (*termacts[node->tok].pre)(p, meta, node)) - dochild = 0; - } else /* MDOC_TEXT == node->type */ - word(p, node->data.text.string); + p->flags |= ttypes[TTYPE_FUNC_ARG]; + return(1); +} - /* Children. */ - if (dochild && node->child) - termprint_r(p, meta, node->child); +/* ARGSUSED */ +static void +termp_fa_post(DECL_ARGS) +{ - /* Post-processing. */ + p->flags &= ~ttypes[TTYPE_FUNC_ARG]; +} - if (MDOC_TEXT != node->type) - if (termacts[node->tok].post) - (*termacts[node->tok].post)(p, meta, node); - /* Siblings. */ +/* ARGSUSED */ +static int +termp_va_pre(DECL_ARGS) +{ - if (node->next) - termprint_r(p, meta, node->next); + p->flags |= ttypes[TTYPE_VAR_DECL]; + return(1); } +/* ARGSUSED */ static void -termprint_footer(struct termp *p, const struct mdoc_meta *meta) +termp_va_post(DECL_ARGS) +{ + + p->flags &= ~ttypes[TTYPE_VAR_DECL]; +} + + +/* ARGSUSED */ +static int +termp_bd_pre(DECL_ARGS) { - struct tm *tm; - char *buf, *os; - size_t sz, osz, ssz, i; + const struct mdoc_block *bl; + const struct mdoc_node *n; - if (NULL == (buf = malloc(p->rmargin))) - err(1, "malloc"); - if (NULL == (os = malloc(p->rmargin))) - err(1, "malloc"); + if (MDOC_BLOCK == node->type) { + vspace(p); + return(1); + } else if (MDOC_BODY != node->type) + return(1); - tm = localtime(&meta->date); + assert(MDOC_BLOCK == node->parent->type); -#ifdef __linux__ - if (0 == strftime(buf, p->rmargin, "%B %d, %Y", tm)) -#else - if (NULL == strftime(buf, p->rmargin, "%B %d, %Y", tm)) -#endif - err(1, "strftime"); + bl = &node->parent->data.block; + if ( ! arg_hasattr(MDOC_Literal, bl->argc, bl->argv)) + return(1); - osz = strlcpy(os, meta->os, p->rmargin); + p->flags |= TERMP_LITERAL; - sz = strlen(buf); - ssz = sz + osz + 1; + for (n = node->child; n; n = n->next) { + assert(MDOC_TEXT == n->type); /* FIXME */ + if ((*n->data.text.string)) { + word(p, n->data.text.string); + flushln(p); + } else + vspace(p); - if (ssz > p->rmargin) { - ssz -= p->rmargin; - assert(ssz <= osz); - os[osz - ssz] = 0; - ssz = 1; - } else - ssz = p->rmargin - ssz + 1; + } + + p->flags &= ~TERMP_LITERAL; + return(0); +} - printf("\n"); - printf("%s", os); - for (i = 0; i < ssz; i++) - printf(" "); - printf("%s\n", buf); - fflush(stdout); +/* ARGSUSED */ +static int +termp_qq_pre(DECL_ARGS) +{ - free(buf); - free(os); + if (MDOC_BODY != node->type) + return(1); + word(p, "\""); + p->flags |= TERMP_NOSPACE; + return(1); } +/* ARGSUSED */ static void -termprint_header(struct termp *p, const struct mdoc_meta *meta) -{ - char *buf, *title; - const char *pp, *msec; - size_t ssz, tsz, ttsz, i;; - - if (NULL == (buf = malloc(p->rmargin))) - err(1, "malloc"); - if (NULL == (title = malloc(p->rmargin))) - err(1, "malloc"); - - if (NULL == (pp = mdoc_vol2a(meta->vol))) - switch (meta->msec) { - case (MSEC_1): - /* FALLTHROUGH */ - case (MSEC_6): - /* FALLTHROUGH */ - case (MSEC_7): - pp = mdoc_vol2a(VOL_URM); - break; - case (MSEC_8): - pp = mdoc_vol2a(VOL_SMM); - break; - case (MSEC_2): - /* FALLTHROUGH */ - case (MSEC_3): - /* FALLTHROUGH */ - case (MSEC_4): - /* FALLTHROUGH */ - case (MSEC_5): - pp = mdoc_vol2a(VOL_PRM); - break; - case (MSEC_9): - pp = mdoc_vol2a(VOL_KM); - break; - default: - /* FIXME: capitalise. */ - if (NULL == (pp = mdoc_msec2a(meta->msec))) - pp = mdoc_msec2a(MSEC_local); - break; - } - assert(pp); - - tsz = strlcpy(buf, pp, p->rmargin); - assert(tsz < p->rmargin); - - if ((pp = mdoc_arch2a(meta->arch))) { - tsz = strlcat(buf, " (", p->rmargin); - assert(tsz < p->rmargin); - tsz = strlcat(buf, pp, p->rmargin); - assert(tsz < p->rmargin); - tsz = strlcat(buf, ")", p->rmargin); - assert(tsz < p->rmargin); - } +termp_qq_post(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) + return; + p->flags |= TERMP_NOSPACE; + word(p, "\""); +} + + +/* ARGSUSED */ +static int +termp_bx_pre(DECL_ARGS) +{ + + word(p, "BSD"); + return(1); +} + + +/* ARGSUSED */ +static int +termp_ox_pre(DECL_ARGS) +{ + + word(p, "OpenBSD"); + return(1); +} + + +/* ARGSUSED */ +static int +termp_nx_pre(DECL_ARGS) +{ + + word(p, "NetBSD"); + return(1); +} + + +/* ARGSUSED */ +static int +termp_sq_pre(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) + return(1); + word(p, "`"); + p->flags |= TERMP_NOSPACE; + return(1); +} - ttsz = strlcpy(title, meta->title, p->rmargin); - if (NULL == (msec = mdoc_msec2a(meta->msec))) - msec = ""; +/* ARGSUSED */ +static void +termp_sq_post(DECL_ARGS) +{ + + if (MDOC_BODY != node->type) + return; + p->flags |= TERMP_NOSPACE; + word(p, "\'"); +} + - ssz = (2 * (ttsz + 2 + strlen(msec))) + tsz + 2; +/* ARGSUSED */ +static int +termp_pf_pre(DECL_ARGS) +{ + + p->flags |= TERMP_IGNDELIM; + return(1); +} - if (ssz > p->rmargin) { - if ((ssz -= p->rmargin) % 2) - ssz++; - ssz /= 2; - - assert(ssz <= ttsz); - title[ttsz - ssz] = 0; - ssz = 1; - } else - ssz = ((p->rmargin - ssz) / 2) + 1; - printf("%s(%s)", title, msec); +/* ARGSUSED */ +static void +termp_pf_post(DECL_ARGS) +{ - for (i = 0; i < ssz; i++) - printf(" "); + p->flags &= ~TERMP_IGNDELIM; + p->flags |= TERMP_NOSPACE; +} - printf("%s", buf); - for (i = 0; i < ssz; i++) - printf(" "); +/* ARGSUSED */ +static int +termp_ss_pre(DECL_ARGS) +{ - printf("%s(%s)\n", title, msec); - fflush(stdout); + switch (node->type) { + case (MDOC_HEAD): + vspace(p); + p->flags |= ttypes[TTYPE_SSECTION]; + p->offset = INDENT / 2; + break; + default: + break; + } - free(title); - free(buf); + return(1); } -void -termprint(const struct mdoc_node *node, - const struct mdoc_meta *meta) +/* ARGSUSED */ +static void +termp_ss_post(DECL_ARGS) { - struct termp p; - p.maxrmargin = 80; /* XXX */ - p.rmargin = p.maxrmargin; - p.maxcols = 1024; - p.offset = p.col = 0; - p.flags = TERMP_NOSPACE; + switch (node->type) { + case (MDOC_HEAD): + p->flags &= ~ttypes[TTYPE_SSECTION]; + newln(p); + p->offset = INDENT; + break; + default: + break; + } +} - if (NULL == (p.buf = malloc(p.maxcols))) - err(1, "malloc"); - termprint_header(&p, meta); - termprint_r(&p, meta, node); - termprint_footer(&p, meta); +/* ARGSUSED */ +static int +termp_pa_pre(DECL_ARGS) +{ - free(p.buf); + p->flags |= ttypes[TTYPE_FILE]; + return(1); } +/* ARGSUSED */ +static void +termp_pa_post(DECL_ARGS) +{ + + p->flags &= ~ttypes[TTYPE_FILE]; +} |