-/* $Id: action.c,v 1.3 2009/01/07 15:53:00 kristaps Exp $ */
+/* $Id: action.c,v 1.32 2009/03/06 14:24:49 kristaps Exp $ */
/*
* Copyright (c) 2008 Kristaps Dzonsons <kristaps@kth.se>
*
* TORTIOUS ACTION, ARISING OUT OF OR IN CONNECTION WITH THE USE OR
* PERFORMANCE OF THIS SOFTWARE.
*/
+#include <sys/utsname.h>
+
#include <assert.h>
+#include <errno.h>
+#include <stdio.h>
#include <stdlib.h>
+#include <string.h>
+#include <time.h>
#include "private.h"
-typedef int (*a_act)(struct mdoc *, int, int);
-
+/*
+ * Actions are executed on macros after they've been post-validated: in
+ * other words, a macro will not be "acted upon" until all of its
+ * children have been filled in (post-fix order).
+ */
struct actions {
- a_act action;
+ int (*post)(struct mdoc *);
};
+/* Per-macro action routines. */
+
+static int post_ar(struct mdoc *);
+static int post_bl(struct mdoc *);
+static int post_bl_width(struct mdoc *);
+static int post_bl_tagwidth(struct mdoc *);
+static int post_dd(struct mdoc *);
+static int post_dt(struct mdoc *);
+static int post_nm(struct mdoc *);
+static int post_os(struct mdoc *);
+static int post_sh(struct mdoc *);
+static int post_ex(struct mdoc *);
-static int action_sh(struct mdoc *, int, int);
+static int post_prologue(struct mdoc *);
+/* Array of macro action routines. */
const struct actions mdoc_actions[MDOC_MAX] = {
{ NULL }, /* \" */
- { NULL }, /* Dd */
- { NULL }, /* Dt */
- { NULL }, /* Os */
- { action_sh }, /* Sh */
+ { post_dd }, /* Dd */
+ { post_dt }, /* Dt */
+ { post_os }, /* Os */
+ { post_sh }, /* Sh */
{ NULL }, /* Ss */
{ NULL }, /* Pp */
{ NULL }, /* D1 */
{ NULL }, /* Dl */
{ NULL }, /* Bd */
{ NULL }, /* Ed */
- { NULL }, /* Bl */
+ { post_bl }, /* Bl */
{ NULL }, /* El */
{ NULL }, /* It */
{ NULL }, /* Ad */
{ NULL }, /* An */
- { NULL }, /* Ar */
+ { post_ar }, /* Ar */
{ NULL }, /* Cd */
{ NULL }, /* Cm */
{ NULL }, /* Dv */
{ NULL }, /* Er */
{ NULL }, /* Ev */
- { NULL }, /* Ex */
+ { post_ex }, /* Ex */
{ NULL }, /* Fa */
{ NULL }, /* Fd */
{ NULL }, /* Fl */
{ NULL }, /* In */
{ NULL }, /* Li */
{ NULL }, /* Nd */
- { NULL }, /* Nm */
+ { post_nm }, /* Nm */
{ NULL }, /* Op */
{ NULL }, /* Ot */
{ NULL }, /* Pa */
{ NULL }, /* Hf */
{ NULL }, /* Fr */
{ NULL }, /* Ud */
+ { NULL }, /* Lb */
};
static int
-action_sh(struct mdoc *mdoc, int tok, int pos)
+post_ex(struct mdoc *mdoc)
{
- enum mdoc_sec sec;
- int i;
- struct mdoc_node *n;
- char *args[MDOC_LINEARG_MAX];
- if (MDOC_HEAD != mdoc->last->type)
+ /*
+ * If `.Ex -std' is invoked without an argument, fill it in with
+ * our name (if it's been set).
+ */
+
+ if (0 == mdoc->last->data.elem.argc)
+ return(1);
+ if (mdoc->last->data.elem.argv[0].sz)
return(1);
- n = mdoc->last->child;
- assert(n);
+ assert(mdoc->meta.name);
- for (i = 0; n && i < MDOC_LINEARG_MAX; n = n->next, i++) {
- assert(MDOC_TEXT == n->type);
- assert(NULL == n->child);
- assert(n->data.text.string);
- args[i] = n->data.text.string;
- }
+ mdoc_msg(mdoc, "writing %s argument: %s",
+ mdoc_argnames[MDOC_Std], mdoc->meta.name);
- sec = mdoc_atosec((size_t)i, (const char **)args);
- if (SEC_CUSTOM != sec)
- mdoc->sec_lastn = sec;
- mdoc->sec_last = sec;
+ mdoc->last->data.elem.argv[0].sz = 1;
+ mdoc->last->data.elem.argv[0].value = xcalloc(1, sizeof(char *));
+ mdoc->last->data.elem.argv[0].value[0] = xstrdup(mdoc->meta.name);
+ return(1);
+}
+
+
+static int
+post_nm(struct mdoc *mdoc)
+{
+ char buf[64];
+
+ if (mdoc->meta.name)
+ return(1);
+
+ (void)xstrlcpys(buf, mdoc->last->child, sizeof(buf));
+ mdoc->meta.name = xstrdup(buf);
+ mdoc_msg(mdoc, "name: %s", mdoc->meta.name);
return(1);
}
-int
-mdoc_action(struct mdoc *mdoc, int pos)
+static int
+post_sh(struct mdoc *mdoc)
{
- int t;
+ enum mdoc_sec sec;
+ char buf[64];
- switch (mdoc->last->type) {
- case (MDOC_BODY):
- t = mdoc->last->data.body.tok;
- break;
- case (MDOC_ELEM):
- t = mdoc->last->data.elem.tok;
- break;
- case (MDOC_BLOCK):
- t = mdoc->last->data.block.tok;
- break;
- case (MDOC_HEAD):
- t = mdoc->last->data.head.tok;
+ /*
+ * We keep track of the current section /and/ the "named"
+ * section, which is one of the conventional ones, in order to
+ * check ordering.
+ */
+
+ if (MDOC_HEAD != mdoc->last->type)
+ return(1);
+
+ (void)xstrlcpys(buf, mdoc->last->child, sizeof(buf));
+ if (SEC_CUSTOM != (sec = mdoc_atosec(buf)))
+ mdoc->lastnamed = sec;
+
+ mdoc->lastsec = sec;
+
+ switch (mdoc->lastsec) {
+ case (SEC_RETURN_VALUES):
+ /* FALLTHROUGH */
+ case (SEC_ERRORS):
+ switch (mdoc->meta.msec) {
+ case (2):
+ /* FALLTHROUGH */
+ case (3):
+ /* FALLTHROUGH */
+ case (9):
+ break;
+ default:
+ return(mdoc_warn(mdoc, WARN_COMPAT,
+ "inappropriate section for "
+ "manual section"));
+ }
break;
default:
+ break;
+ }
+ return(1);
+}
+
+
+static int
+post_dt(struct mdoc *mdoc)
+{
+ struct mdoc_node *n;
+ const char *cp;
+ char *ep;
+ long lval;
+
+ if (mdoc->meta.title)
+ free(mdoc->meta.title);
+ if (mdoc->meta.vol)
+ free(mdoc->meta.vol);
+ if (mdoc->meta.arch)
+ free(mdoc->meta.arch);
+
+ mdoc->meta.title = mdoc->meta.vol = mdoc->meta.arch = NULL;
+ mdoc->meta.msec = 0;
+
+ /* Handles: `.Dt'
+ * --> title = unknown, volume = local, msec = 0, arch = NULL
+ */
+
+ if (NULL == (n = mdoc->last->child)) {
+ mdoc->meta.title = xstrdup("unknown");
+ mdoc->meta.vol = xstrdup("local");
+ mdoc_msg(mdoc, "title: %s", mdoc->meta.title);
+ mdoc_msg(mdoc, "volume: %s", mdoc->meta.vol);
+ mdoc_msg(mdoc, "arch: <unset>");
+ mdoc_msg(mdoc, "msec: <unset>");
+ return(post_prologue(mdoc));
+ }
+
+ /* Handles: `.Dt TITLE'
+ * --> title = TITLE, volume = local, msec = 0, arch = NULL
+ */
+
+ mdoc->meta.title = xstrdup(n->data.text.string);
+ mdoc_msg(mdoc, "title: %s", mdoc->meta.title);
+
+ if (NULL == (n = n->next)) {
+ mdoc->meta.vol = xstrdup("local");
+ mdoc_msg(mdoc, "volume: %s", mdoc->meta.vol);
+ mdoc_msg(mdoc, "arch: <unset>");
+ mdoc_msg(mdoc, "msec: %d", mdoc->meta.msec);
+ return(post_prologue(mdoc));
+ }
+
+ /* Handles: `.Dt TITLE SEC'
+ * --> title = TITLE, volume = SEC is msec ?
+ * format(msec) : SEC,
+ * msec = SEC is msec ? atoi(msec) : 0,
+ * arch = NULL
+ */
+
+ if ((cp = mdoc_a2msec(n->data.text.string))) {
+ mdoc->meta.vol = xstrdup(cp);
+ errno = 0;
+ lval = strtol(n->data.text.string, &ep, 10);
+ if (n->data.text.string[0] != '\0' && *ep == '\0')
+ mdoc->meta.msec = (int)lval;
+ } else
+ mdoc->meta.vol = xstrdup(n->data.text.string);
+
+ if (NULL == (n = n->next)) {
+ mdoc_msg(mdoc, "volume: %s", mdoc->meta.vol);
+ mdoc_msg(mdoc, "arch: <unset>");
+ mdoc_msg(mdoc, "msec: %d", mdoc->meta.msec);
+ return(post_prologue(mdoc));
+ }
+
+ /* Handles: `.Dt TITLE SEC VOL'
+ * --> title = TITLE, volume = VOL is vol ?
+ * format(VOL) :
+ * VOL is arch ? format(arch) :
+ * VOL
+ */
+
+ if ((cp = mdoc_a2vol(n->data.text.string))) {
+ free(mdoc->meta.vol);
+ mdoc->meta.vol = xstrdup(cp);
+ n = n->next;
+ } else {
+ cp = mdoc_a2arch(n->data.text.string);
+ if (NULL == cp) {
+ free(mdoc->meta.vol);
+ mdoc->meta.vol = xstrdup(n->data.text.string);
+ } else
+ mdoc->meta.arch = xstrdup(cp);
+ }
+
+ mdoc_msg(mdoc, "volume: %s", mdoc->meta.vol);
+ mdoc_msg(mdoc, "arch: %s", mdoc->meta.arch ?
+ mdoc->meta.arch : "<unset>");
+ mdoc_msg(mdoc, "msec: %d", mdoc->meta.msec);
+
+ /* Ignore any subsequent parameters... */
+
+ return(post_prologue(mdoc));
+}
+
+
+static int
+post_os(struct mdoc *mdoc)
+{
+ char buf[64];
+ struct utsname utsname;
+
+ if (mdoc->meta.os)
+ free(mdoc->meta.os);
+
+ (void)xstrlcpys(buf, mdoc->last->child, sizeof(buf));
+
+ if (0 == buf[0]) {
+ if (-1 == uname(&utsname))
+ return(mdoc_err(mdoc, "utsname"));
+ (void)xstrlcpy(buf, utsname.sysname, sizeof(buf));
+ (void)xstrlcat(buf, " ", sizeof(buf));
+ (void)xstrlcat(buf, utsname.release, sizeof(buf));
+ }
+
+ mdoc->meta.os = xstrdup(buf);
+ mdoc_msg(mdoc, "system: %s", mdoc->meta.os);
+
+ mdoc->lastnamed = mdoc->lastsec = SEC_BODY;
+
+ return(post_prologue(mdoc));
+}
+
+
+static int
+post_bl_tagwidth(struct mdoc *mdoc)
+{
+ struct mdoc_node *n;
+ struct mdoc_block *b;
+ int sz;
+ char buf[32];
+
+ /*
+ * If -tag has been specified and -width has not been, then try
+ * to intuit our width from the first body element.
+ */
+
+ b = &mdoc->last->data.block;
+
+ if (NULL == (n = b->body->child))
+ return(1);
+ assert(MDOC_It == n->tok);
+
+ /*
+ * Use the text width, if a text node, or the default macro
+ * width if a macro.
+ */
+
+ if ((n = n->data.block.head->child)) {
+ if (MDOC_TEXT != n->type) {
+ if (0 == (sz = mdoc_macro2len(n->tok)))
+ sz = -1;
+ } else
+ sz = (int)strlen(n->data.text.string) + 1;
+ } else
+ sz = -1;
+
+ if (-1 == sz) {
+ if ( ! mdoc_warn(mdoc, WARN_SYNTAX,
+ "cannot determine default %s",
+ mdoc_argnames[MDOC_Width]))
+ return(0);
+ sz = 10;
+ }
+
+ (void)snprintf(buf, sizeof(buf), "%dn", sz);
+
+ /*
+ * We have to dynamically add this to the macro's argument list.
+ * We're guaranteed that a MDOC_Width doesn't already exist.
+ */
+
+ (b->argc)++;
+ b->argv = xrealloc(b->argv, b->argc * sizeof(struct mdoc_arg));
+
+ b->argv[b->argc - 1].arg = MDOC_Width;
+ b->argv[b->argc - 1].line = mdoc->last->line;
+ b->argv[b->argc - 1].pos = mdoc->last->pos;
+ b->argv[b->argc - 1].sz = 1;
+ b->argv[b->argc - 1].value = xcalloc(1, sizeof(char *));
+ b->argv[b->argc - 1].value[0] = xstrdup(buf);
+
+ mdoc_msg(mdoc, "adding %s argument: %dn",
+ mdoc_argnames[MDOC_Width], sz);
+
+ return(1);
+}
+
+
+static int
+post_bl_width(struct mdoc *mdoc)
+{
+ size_t width;
+ int i, tok;
+ char buf[32];
+ char **p;
+
+ for (i = 0; i < (int)mdoc->last->data.block.argc; i++)
+ if (MDOC_Width == mdoc->last->data.block.argv[i].arg)
+ break;
+
+ assert(i < (int)mdoc->last->data.block.argc);
+ assert(1 == mdoc->last->data.block.argv[i].sz);
+ p = &mdoc->last->data.block.argv[i].value[0];
+
+ /*
+ * If the value to -width is a macro, then we re-write it to be
+ * the macro's width as set in share/tmac/mdoc/doc-common.
+ */
+
+ if (xstrcmp(*p, "Ds"))
+ width = 8;
+ else if (MDOC_MAX == (tok = mdoc_find(mdoc, *p)))
return(1);
+ else if (0 == (width = mdoc_macro2len(tok)))
+ return(mdoc_warn(mdoc, WARN_SYNTAX,
+ "%s macro has no length",
+ mdoc_argnames[MDOC_Width]));
+
+ mdoc_msg(mdoc, "re-writing %s argument: %s -> %zun",
+ mdoc_argnames[MDOC_Width], *p, width);
+
+ /* The value already exists: free and reallocate it. */
+
+ (void)snprintf(buf, sizeof(buf), "%zun", width);
+
+ free(*p);
+ *p = strdup(buf);
+
+ return(1);
+}
+
+
+static int
+post_bl(struct mdoc *mdoc)
+{
+ int i, r;
+
+ if (MDOC_BLOCK != mdoc->last->type)
+ return(1);
+
+ /*
+ * These are fairly complicated, so we've broken them into two
+ * functions. post_bl_tagwidth() is called when a -tag is
+ * specified, but no -width (it must be guessed). The second
+ * when a -width is specified (macro indicators must be
+ * rewritten into real lengths).
+ */
+
+ for (r = i = 0; i < (int)mdoc->last->data.block.argc; i++) {
+ if (MDOC_Tag == mdoc->last->data.block.argv[i].arg)
+ r |= 1 << 0;
+ if (MDOC_Width == mdoc->last->data.block.argv[i].arg)
+ r |= 1 << 1;
}
- if (NULL == mdoc_actions[t].action)
+ if (r & (1 << 0) && ! (r & (1 << 1))) {
+ if ( ! post_bl_tagwidth(mdoc))
+ return(0);
+ } else if (r & (1 << 1))
+ if ( ! post_bl_width(mdoc))
+ return(0);
+
+ return(1);
+}
+
+
+static int
+post_ar(struct mdoc *mdoc)
+{
+ struct mdoc_node *n;
+
+ if (mdoc->last->child)
return(1);
- /* TODO: MDOC_Nm... ? */
- return((*mdoc_actions[t].action)(mdoc, t, pos));
+
+ n = mdoc->last;
+
+ mdoc->next = MDOC_NEXT_CHILD;
+ if ( ! mdoc_word_alloc(mdoc, mdoc->last->line,
+ mdoc->last->pos, "file"))
+ return(0);
+ mdoc->next = MDOC_NEXT_SIBLING;
+ if ( ! mdoc_word_alloc(mdoc, mdoc->last->line,
+ mdoc->last->pos, "..."))
+ return(0);
+
+ mdoc->last = n;
+ mdoc->next = MDOC_NEXT_SIBLING;
+ return(1);
+}
+
+
+static int
+post_dd(struct mdoc *mdoc)
+{
+ char buf[64];
+
+ (void)xstrlcpys(buf, mdoc->last->child, sizeof(buf));
+
+ if (0 == (mdoc->meta.date = mdoc_atotime(buf)))
+ return(mdoc_err(mdoc, "invalid date syntax"));
+
+ mdoc_msg(mdoc, "date: %u", mdoc->meta.date);
+ return(post_prologue(mdoc));
}
+
+static int
+post_prologue(struct mdoc *mdoc)
+{
+ struct mdoc_node *n;
+
+ /*
+ * The end document shouldn't have the prologue macros as part
+ * of the syntax tree (they encompass only meta-data).
+ */
+
+ if (mdoc->last->parent->child == mdoc->last)
+ mdoc->last->parent->child = mdoc->last->prev;
+ if (mdoc->last->prev)
+ mdoc->last->prev->next = NULL;
+
+ n = mdoc->last;
+ assert(NULL == mdoc->last->next);
+
+ if (mdoc->last->prev) {
+ mdoc->last = mdoc->last->prev;
+ mdoc->next = MDOC_NEXT_SIBLING;
+ } else {
+ mdoc->last = mdoc->last->parent;
+ mdoc->next = MDOC_NEXT_CHILD;
+ }
+
+ mdoc_node_freelist(n);
+ return(1);
+}
+
+
+int
+mdoc_action_post(struct mdoc *mdoc)
+{
+
+ if (MDOC_ACTED & mdoc->last->flags)
+ return(1);
+ mdoc->last->flags |= MDOC_ACTED;
+
+ if (MDOC_TEXT == mdoc->last->type)
+ return(1);
+ if (MDOC_ROOT == mdoc->last->type)
+ return(1);
+ if (NULL == mdoc_actions[mdoc->last->tok].post)
+ return(1);
+ return((*mdoc_actions[mdoc->last->tok].post)(mdoc));
+}
git.ckatri.com / mandoc.git / blobdiff