-/* $Id: mdoc_argv.c,v 1.9 2009/07/06 09:21:24 kristaps Exp $ */
+/* $Id: mdoc_argv.c,v 1.21 2009/07/20 14:12:27 kristaps Exp $ */
/*
* Copyright (c) 2008, 2009 Kristaps Dzonsons <kristaps@kth.se>
*
*/
/* FIXME .Bf Li raises "macro-like parameter". */
-/* FIXME .Bl -column should deprecate old-groff syntax. */
-#define ARGS_QUOTED (1 << 0)
#define ARGS_DELIM (1 << 1)
#define ARGS_TABSEP (1 << 2)
-#define ARGS_ARGVLIKE (1 << 3)
#define ARGV_NONE (1 << 0)
#define ARGV_SINGLE (1 << 1)
#define MULTI_STEP 5
-enum mwarn {
- WQUOTPARM,
- WARGVPARM,
- WCOLEMPTY,
- WTAILWS
-};
-
-enum merr {
- EQUOTTERM,
- EMALLOC,
- EARGVAL
-};
-
static int argv_a2arg(int, const char *);
static int args(struct mdoc *, int, int *,
char *, int, char **);
struct mdoc_argv *, int *, char *);
static int argv_multi(struct mdoc *, int,
struct mdoc_argv *, int *, char *);
-static int pwarn(struct mdoc *, int, int, enum mwarn);
-static int perr(struct mdoc *, int, int, enum merr);
-
-#define verr(m, t) perr((m), (m)->last->line, (m)->last->pos, (t))
/* Per-argument flags. */
0, /* Dd */
0, /* Dt */
0, /* Os */
- ARGS_QUOTED, /* Sh */
- ARGS_QUOTED, /* Ss */
+ 0, /* Sh */
+ 0, /* Ss */
ARGS_DELIM, /* Pp */
ARGS_DELIM, /* D1 */
- ARGS_DELIM | ARGS_QUOTED, /* Dl */
+ ARGS_DELIM, /* Dl */
0, /* Bd */
0, /* Ed */
- ARGS_QUOTED, /* Bl */
+ 0, /* Bl */
0, /* El */
0, /* It */
ARGS_DELIM, /* Ad */
ARGS_DELIM, /* An */
- ARGS_DELIM | ARGS_QUOTED, /* Ar */
- ARGS_QUOTED, /* Cd */
+ ARGS_DELIM, /* Ar */
+ 0, /* Cd */
ARGS_DELIM, /* Cm */
ARGS_DELIM, /* Dv */
ARGS_DELIM, /* Er */
ARGS_DELIM, /* Ev */
0, /* Ex */
- ARGS_DELIM | ARGS_QUOTED, /* Fa */
+ ARGS_DELIM, /* Fa */
0, /* Fd */
ARGS_DELIM, /* Fl */
- ARGS_DELIM | ARGS_QUOTED, /* Fn */
- ARGS_DELIM | ARGS_QUOTED, /* Ft */
+ ARGS_DELIM, /* Fn */
+ ARGS_DELIM, /* Ft */
ARGS_DELIM, /* Ic */
0, /* In */
- ARGS_DELIM | ARGS_QUOTED, /* Li */
- ARGS_QUOTED, /* Nd */
+ ARGS_DELIM, /* Li */
+ 0, /* Nd */
ARGS_DELIM, /* Nm */
ARGS_DELIM, /* Op */
0, /* Ot */
ARGS_DELIM, /* Pa */
0, /* Rv */
- ARGS_DELIM | ARGS_ARGVLIKE, /* St */
+ ARGS_DELIM, /* St */
ARGS_DELIM, /* Va */
ARGS_DELIM, /* Vt */
ARGS_DELIM, /* Xr */
- ARGS_QUOTED, /* %A */
- ARGS_QUOTED, /* %B */
- ARGS_QUOTED, /* %D */
- ARGS_QUOTED, /* %I */
- ARGS_QUOTED, /* %J */
- ARGS_QUOTED, /* %N */
- ARGS_QUOTED, /* %O */
- ARGS_QUOTED, /* %P */
- ARGS_QUOTED, /* %R */
- ARGS_QUOTED, /* %T */
- ARGS_QUOTED, /* %V */
+ 0, /* %A */
+ 0, /* %B */
+ 0, /* %D */
+ 0, /* %I */
+ 0, /* %J */
+ 0, /* %N */
+ 0, /* %O */
+ 0, /* %P */
+ 0, /* %R */
+ 0, /* %T */
+ 0, /* %V */
ARGS_DELIM, /* Ac */
0, /* Ao */
ARGS_DELIM, /* Aq */
ARGS_DELIM, /* Sq */
0, /* Sm */
ARGS_DELIM, /* Sx */
- ARGS_DELIM | ARGS_QUOTED, /* Sy */
+ ARGS_DELIM, /* Sy */
ARGS_DELIM, /* Tn */
ARGS_DELIM, /* Ux */
ARGS_DELIM, /* Xc */
0, /* Xo */
- ARGS_QUOTED, /* Fo */
+ 0, /* Fo */
0, /* Fc */
0, /* Oo */
ARGS_DELIM, /* Oc */
0, /* Ud */
0, /* Lb */
ARGS_DELIM, /* Lp */
- ARGS_DELIM | ARGS_QUOTED, /* Lk */
- ARGS_DELIM | ARGS_QUOTED, /* Mt */
+ ARGS_DELIM, /* Lk */
+ ARGS_DELIM, /* Mt */
ARGS_DELIM, /* Brq */
0, /* Bro */
ARGS_DELIM, /* Brc */
- ARGS_QUOTED, /* %C */
+ 0, /* %C */
0, /* Es */
0, /* En */
0, /* Dx */
- ARGS_QUOTED, /* %Q */
+ 0, /* %Q */
+ 0, /* br */
+ 0, /* sp */
};
* one mandatory value, an optional single value, or no value.
*/
int
-mdoc_argv(struct mdoc *mdoc, int line, int tok,
+mdoc_argv(struct mdoc *m, int line, int tok,
struct mdoc_arg **v, int *pos, char *buf)
{
- int i;
char *p, sv;
struct mdoc_argv tmp;
struct mdoc_arg *arg;
assert(' ' != buf[*pos]);
- if ('-' != buf[*pos] || ARGS_ARGVLIKE & mdoc_argflags[tok])
- return(ARGV_WORD);
-
/* Parse through to the first unescaped space. */
- i = *pos;
p = &buf[++(*pos)];
assert(*pos > 0);
/* XXX - restore saved zeroed byte. */
if (sv)
buf[*pos - 1] = sv;
- if ( ! pwarn(mdoc, line, i, WARGVPARM))
- return(ARGV_ERROR);
return(ARGV_WORD);
}
while (buf[*pos] && ' ' == buf[*pos])
(*pos)++;
- if ( ! argv(mdoc, line, &tmp, pos, buf))
+ if ( ! argv(m, line, &tmp, pos, buf))
return(ARGV_ERROR);
if (NULL == (arg = *v)) {
*v = calloc(1, sizeof(struct mdoc_arg));
if (NULL == *v) {
- (void)verr(mdoc, EMALLOC);
+ (void)mdoc_nerr(m, m->last, EMALLOC);
return(ARGV_ERROR);
}
arg = *v;
sizeof(struct mdoc_argv));
if (NULL == arg->argv) {
- (void)verr(mdoc, EMALLOC);
+ (void)mdoc_nerr(m, m->last, EMALLOC);
return(ARGV_ERROR);
}
}
-
-static int
-perr(struct mdoc *mdoc, int line, int pos, enum merr code)
-{
- char *p;
-
- p = NULL;
- switch (code) {
- case (EMALLOC):
- p = "memory exhausted";
- break;
- case (EQUOTTERM):
- p = "unterminated quoted parameter";
- break;
- case (EARGVAL):
- p = "argument requires a value";
- break;
- }
-
- assert(p);
- return(mdoc_perr(mdoc, line, pos, p));
-}
-
-
-static int
-pwarn(struct mdoc *mdoc, int line, int pos, enum mwarn code)
+int
+mdoc_zargs(struct mdoc *m, int line, int *pos, char *buf, char **v)
{
- char *p;
-
- p = NULL;
- switch (code) {
- case (WQUOTPARM):
- p = "unexpected quoted parameter";
- break;
- case (WARGVPARM):
- p = "argument-like parameter";
- break;
- case (WCOLEMPTY):
- p = "last list column is empty";
- break;
- case (WTAILWS):
- p = "trailing whitespace";
- break;
- }
-
- assert(p);
- return(mdoc_pwarn(mdoc, line, pos, p));
+ return(args(m, line, pos, buf, 0, v));
}
int
-mdoc_args(struct mdoc *mdoc, int line,
+mdoc_args(struct mdoc *m, int line,
int *pos, char *buf, int tok, char **v)
{
int fl, c, i;
fl = (0 == tok) ? 0 : mdoc_argflags[tok];
+ if (MDOC_It != tok)
+ return(args(m, line, pos, buf, fl, v));
+
/*
- * Override per-macro argument flags with context-specific ones.
- * As of now, this is only valid for `It' depending on its list
- * context.
+ * The `It' macro is a special case, as it acquires parameters from its
+ * parent `Bl' context, specifically, we're concerned with -column.
*/
- switch (tok) {
- case (MDOC_It):
- for (n = mdoc->last; n; n = n->parent)
- if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
- break;
-
- assert(n);
- c = (int)(n->args ? n->args->argc : 0);
- assert(c > 0);
+ for (n = m->last; n; n = n->parent)
+ if (MDOC_BLOCK == n->type && MDOC_Bl == n->tok)
+ break;
- /*
- * Using `Bl -column' adds ARGS_TABSEP to the arguments
- * and invalidates ARGS_DELIM. Using `Bl -diag' allows
- * for quoted arguments.
- */
+ assert(n);
+ c = (int)(n->args ? n->args->argc : 0);
+ assert(c > 0);
- /* LINTED */
- for (i = 0; i < c; i++) {
- switch (n->args->argv[i].arg) {
- case (MDOC_Column):
- fl |= ARGS_TABSEP;
- fl &= ~ARGS_DELIM;
- i = c;
- break;
- case (MDOC_Diag):
- fl |= ARGS_QUOTED;
- i = c;
- break;
- default:
- break;
- }
- }
- break;
- default:
+ /* LINTED */
+ for (i = 0; i < c; i++) {
+ if (MDOC_Column != n->args->argv[i].arg)
+ continue;
+ fl |= ARGS_TABSEP;
+ fl &= ~ARGS_DELIM;
break;
}
- return(args(mdoc, line, pos, buf, fl, v));
+ return(args(m, line, pos, buf, fl, v));
}
static int
-args(struct mdoc *mdoc, int line,
- int *pos, char *buf, int fl, char **v)
+args(struct mdoc *m, int line, int *pos,
+ char *buf, int fl, char **v)
{
int i;
char *p, *pp;
- assert(*pos > 0);
+ assert(*pos);
+ assert(' ' != buf[*pos]);
if (0 == buf[*pos])
return(ARGS_EOLN);
- if ('\"' == buf[*pos] && ! (fl & ARGS_QUOTED))
- if ( ! pwarn(mdoc, line, *pos, WQUOTPARM))
- return(ARGS_ERROR);
-
- if ( ! (fl & ARGS_ARGVLIKE) && '-' == buf[*pos])
- if ( ! pwarn(mdoc, line, *pos, WARGVPARM))
- return(ARGS_ERROR);
-
/*
* If the first character is a delimiter and we're to look for
* delimited strings, then pass down the buffer seeing if it
if ( ! mdoc_iscdelim(buf[i]))
break;
i++;
- /* There must be at least one space... */
if (0 == buf[i] || ' ' != buf[i])
break;
i++;
while (buf[i] && ' ' == buf[i])
i++;
}
+
+ /* FIXME: warn about trailing whitespace. */
+
if (0 == buf[i]) {
*v = &buf[*pos];
return(ARGS_PUNCT);
}
}
- /* First parse non-quoted strings. */
+ *v = &buf[*pos];
- if ('\"' != buf[*pos] || ! (ARGS_QUOTED & fl)) {
- *v = &buf[*pos];
-
- /*
- * Thar be dragons here! If we're tab-separated, search
- * ahead for either a tab or the `Ta' macro.
- * If a `Ta' is detected, it must be space-buffered before and
- * after. If either of these hold true, then prune out the
- * extra spaces and call it an argument.
- */
-
- if (ARGS_TABSEP & fl) {
- /* Scan ahead to unescaped tab. */
-
- p = strchr(*v, '\t');
-
- /* Scan ahead to unescaped `Ta'. */
-
- for (pp = *v; ; pp++) {
- if (NULL == (pp = strstr(pp, "Ta")))
- break;
- if (pp > *v && ' ' != *(pp - 1))
- continue;
- if (' ' == *(pp + 2) || 0 == *(pp + 2))
- break;
- }
+ /*
+ * First handle TABSEP items, restricted to `Bl -column'. This
+ * ignores conventional token parsing and instead uses tabs or
+ * `Ta' macros to separate phrases. Phrases are parsed again
+ * for arguments at a later phase.
+ */
- /* Choose delimiter tab/Ta. */
+ if (ARGS_TABSEP & fl) {
+ /* Scan ahead to tab (can't be escaped). */
+ p = strchr(*v, '\t');
- if (p && pp)
- p = (p < pp ? p : pp);
- else if ( ! p && pp)
- p = pp;
+ /* Scan ahead to unescaped `Ta'. */
+ for (pp = *v; ; pp++) {
+ if (NULL == (pp = strstr(pp, "Ta")))
+ break;
+ if (pp > *v && ' ' != *(pp - 1))
+ continue;
+ if (' ' == *(pp + 2) || 0 == *(pp + 2))
+ break;
+ }
- /* Strip delimiter's preceding whitespace. */
+ /*
+ * Adjust new-buffer position to be beyond delimiter
+ * mark (e.g., Ta -> end + 2).
+ */
+ if (p && pp) {
+ *pos += pp < p ? 2 : 1;
+ p = pp < p ? pp : p;
+ } else if (p && ! pp) {
+ *pos += 1;
+ } else if (pp && ! p) {
+ p = pp;
+ *pos += 2;
+ } else
+ p = strchr(*v, 0);
- if (p && p > *v) {
- pp = p - 1;
- while (pp > *v && ' ' == *pp)
- pp--;
- if (pp == *v && ' ' == *pp)
- *pp = 0;
- else if (' ' == *pp)
- *(pp + 1) = 0;
- }
+ /* Whitespace check for eoln case... */
+ if (0 == *p && ' ' == *(p - 1))
+ if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
+ return(ARGS_ERROR);
- /* ...in- and proceding whitespace. */
+ *pos += (int)(p - *v);
- if (p && ('\t' != *p)) {
- *p++ = 0;
- *p++ = 0;
- } else if (p)
- *p++ = 0;
+ /* Strip delimiter's preceding whitespace. */
+ pp = p - 1;
+ while (pp > *v && ' ' == *pp) {
+ if (pp > *v && '\\' == *(pp - 1))
+ break;
+ pp--;
+ }
+ *(pp + 1) = 0;
- if (p) {
- while (' ' == *p)
- p++;
- if (0 != *p)
- *(p - 1) = 0;
- *pos += (int)(p - *v);
- }
+ /* Strip delimiter's proceeding whitespace. */
+ for (pp = &buf[*pos]; ' ' == *pp; pp++, (*pos)++)
+ /* Skip ahead. */ ;
- if (p && 0 == *p)
- if ( ! pwarn(mdoc, line, *pos, WCOLEMPTY))
- return(0);
- if (p && 0 == *p && p > *v && ' ' == *(p - 1))
- if ( ! pwarn(mdoc, line, *pos, WTAILWS))
- return(0);
+ return(ARGS_PHRASE);
+ }
- if (p)
- return(ARGS_PHRASE);
+ /*
+ * Process a quoted literal. A quote begins with a double-quote
+ * and ends with a double-quote NOT preceded by a double-quote.
+ * Whitespace is NOT involved in literal termination.
+ */
- /* Configure the eoln case, too. */
+ if ('\"' == buf[*pos]) {
+ *v = &buf[++(*pos)];
- p = strchr(*v, 0);
- assert(p);
-
- if (p > *v && ' ' == *(p - 1))
- if ( ! pwarn(mdoc, line, *pos, WTAILWS))
- return(0);
- *pos += (int)(p - *v);
-
- return(ARGS_PHRASE);
- }
-
- /* Do non-tabsep look-ahead here. */
-
- if ( ! (ARGS_TABSEP & fl))
- while (buf[*pos]) {
- if (' ' == buf[*pos])
- if ('\\' != buf[*pos - 1])
- break;
- (*pos)++;
- }
+ for ( ; buf[*pos]; (*pos)++) {
+ if ('\"' != buf[*pos])
+ continue;
+ if ('\"' != buf[*pos + 1])
+ break;
+ (*pos)++;
+ }
- if (0 == buf[*pos])
- return(ARGS_WORD);
+ if (0 == buf[*pos]) {
+ if ( ! mdoc_pwarn(m, line, *pos, EQUOTTERM))
+ return(ARGS_ERROR);
+ return(ARGS_QWORD);
+ }
buf[(*pos)++] = 0;
if (0 == buf[*pos])
- return(ARGS_WORD);
-
- if ( ! (ARGS_TABSEP & fl))
- while (buf[*pos] && ' ' == buf[*pos])
- (*pos)++;
+ return(ARGS_QWORD);
- if (buf[*pos])
- return(ARGS_WORD);
+ while (' ' == buf[*pos])
+ (*pos)++;
- if ( ! pwarn(mdoc, line, *pos, WTAILWS))
- return(ARGS_ERROR);
+ if (0 == buf[*pos])
+ if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
+ return(ARGS_ERROR);
- return(ARGS_WORD);
+ return(ARGS_QWORD);
}
- /*
- * If we're a quoted string (and quoted strings are allowed),
- * then parse ahead to the next quote. If none's found, it's an
- * error. After, parse to the next word.
+ /*
+ * A non-quoted term progresses until either the end of line or
+ * a non-escaped whitespace.
*/
- *v = &buf[++(*pos)];
-
- while (buf[*pos] && '\"' != buf[*pos])
- (*pos)++;
+ for ( ; buf[*pos]; (*pos)++)
+ if (' ' == buf[*pos] && '\\' != buf[*pos - 1])
+ break;
- if (0 == buf[*pos]) {
- (void)perr(mdoc, line, *pos, EQUOTTERM);
- return(ARGS_ERROR);
- }
+ if (0 == buf[*pos])
+ return(ARGS_WORD);
buf[(*pos)++] = 0;
- if (0 == buf[*pos])
- return(ARGS_QWORD);
- while (buf[*pos] && ' ' == buf[*pos])
+ while (' ' == buf[*pos])
(*pos)++;
- if (buf[*pos])
- return(ARGS_QWORD);
-
- if ( ! pwarn(mdoc, line, *pos, WTAILWS))
- return(ARGS_ERROR);
+ if (0 == buf[*pos])
+ if ( ! mdoc_pwarn(m, line, *pos, ETAILWS))
+ return(ARGS_ERROR);
- return(ARGS_QWORD);
+ return(ARGS_WORD);
}
static int
-argv_multi(struct mdoc *mdoc, int line,
+argv_multi(struct mdoc *m, int line,
struct mdoc_argv *v, int *pos, char *buf)
{
int c;
for (v->sz = 0; ; v->sz++) {
if ('-' == buf[*pos])
break;
- c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
+ c = args(m, line, pos, buf, 0, &p);
if (ARGS_ERROR == c)
return(0);
else if (ARGS_EOLN == c)
v->value = realloc(v->value,
(v->sz + MULTI_STEP) * sizeof(char *));
if (NULL == v->value) {
- (void)verr(mdoc, EMALLOC);
+ (void)mdoc_nerr(m, m->last, EMALLOC);
return(ARGV_ERROR);
}
}
if (NULL == (v->value[(int)v->sz] = strdup(p)))
- return(verr(mdoc, EMALLOC));
+ return(mdoc_nerr(m, m->last, EMALLOC));
}
return(1);
static int
-argv_opt_single(struct mdoc *mdoc, int line,
+argv_opt_single(struct mdoc *m, int line,
struct mdoc_argv *v, int *pos, char *buf)
{
int c;
if ('-' == buf[*pos])
return(1);
- c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
+ c = args(m, line, pos, buf, 0, &p);
if (ARGS_ERROR == c)
return(0);
if (ARGS_EOLN == c)
v->sz = 1;
if (NULL == (v->value = calloc(1, sizeof(char *))))
- return(verr(mdoc, EMALLOC));
+ return(mdoc_nerr(m, m->last, EMALLOC));
if (NULL == (v->value[0] = strdup(p)))
- return(verr(mdoc, EMALLOC));
+ return(mdoc_nerr(m, m->last, EMALLOC));
return(1);
}
* Parse a single, mandatory value from the stream.
*/
static int
-argv_single(struct mdoc *mdoc, int line,
+argv_single(struct mdoc *m, int line,
struct mdoc_argv *v, int *pos, char *buf)
{
int c, ppos;
ppos = *pos;
- c = args(mdoc, line, pos, buf, ARGS_QUOTED, &p);
+ c = args(m, line, pos, buf, 0, &p);
if (ARGS_ERROR == c)
return(0);
if (ARGS_EOLN == c)
- return(perr(mdoc, line, ppos, EARGVAL));
+ return(mdoc_perr(m, line, ppos, EARGVAL));
v->sz = 1;
if (NULL == (v->value = calloc(1, sizeof(char *))))
- return(verr(mdoc, EMALLOC));
+ return(mdoc_nerr(m, m->last, EMALLOC));
if (NULL == (v->value[0] = strdup(p)))
- return(verr(mdoc, EMALLOC));
+ return(mdoc_nerr(m, m->last, EMALLOC));
return(1);
}
git.ckatri.com / mandoc.git / blobdiff