diff options
| -rw-r--r-- | eqn.c | 53 |
1 files changed, 37 insertions, 16 deletions
@@ -1,7 +1,7 @@ /* $Id$ */ /* * Copyright (c) 2011, 2014 Kristaps Dzonsons <kristaps@bsd.lv> - * Copyright (c) 2014, 2015 Ingo Schwarze <schwarze@openbsd.org> + * Copyright (c) 2014, 2015, 2017 Ingo Schwarze <schwarze@openbsd.org> * * Permission to use, copy, modify, and distribute this software for any * purpose with or without fee is hereby granted, provided that the above @@ -80,9 +80,10 @@ enum eqn_tok { EQN_TOK_TDEFINE, EQN_TOK_NDEFINE, EQN_TOK_UNDEF, - EQN_TOK_EOF, EQN_TOK_ABOVE, - EQN_TOK__MAX + EQN_TOK__MAX, + EQN_TOK_FUNC, + EQN_TOK_EOF }; static const char *eqn_toks[EQN_TOK__MAX] = { @@ -130,10 +131,16 @@ static const char *eqn_toks[EQN_TOK__MAX] = { "tdefine", /* EQN_TOK_TDEFINE */ "ndefine", /* EQN_TOK_NDEFINE */ "undef", /* EQN_TOK_UNDEF */ - NULL, /* EQN_TOK_EOF */ "above", /* EQN_TOK_ABOVE */ }; +static const char *const eqn_func[] = { + "acos", "acsc", "and", "arc", "asec", "asin", "atan", + "cos", "cosh", "coth", "csc", "det", "exp", "for", + "if", "lim", "ln", "log", "max", "min", + "sec", "sin", "sinh", "tan", "tanh", "Im", "Re", +}; + enum eqn_symt { EQNSYM_alpha, EQNSYM_beta, @@ -498,12 +505,12 @@ eqn_tok_parse(struct eqn_node *ep, char **p) size_t i, sz; int quoted; - if (NULL != p) + if (p != NULL) *p = NULL; quoted = ep->data[ep->cur] == '"'; - if (NULL == (start = eqn_nexttok(ep, &sz))) + if ((start = eqn_nexttok(ep, &sz)) == NULL) return EQN_TOK_EOF; if (quoted) { @@ -512,17 +519,18 @@ eqn_tok_parse(struct eqn_node *ep, char **p) return EQN_TOK__MAX; } - for (i = 0; i < EQN_TOK__MAX; i++) { - if (NULL == eqn_toks[i]) - continue; + for (i = 0; i < EQN_TOK__MAX; i++) if (STRNEQ(start, sz, eqn_toks[i], strlen(eqn_toks[i]))) - break; - } + return i; - if (i == EQN_TOK__MAX && NULL != p) + if (p != NULL) *p = mandoc_strndup(start, sz); - return i; + for (i = 0; i < sizeof(eqn_func)/sizeof(*eqn_func); i++) + if (STRNEQ(start, sz, eqn_func[i], strlen(eqn_func[i]))) + return EQN_TOK_FUNC; + + return EQN_TOK__MAX; } static void @@ -1067,15 +1075,26 @@ this_tok: * TODO: make sure we're not in an open subexpression. */ return ROFF_EQN; - default: - assert(tok == EQN_TOK__MAX); - assert(NULL != p); + case EQN_TOK_FUNC: + case EQN_TOK__MAX: + assert(p != NULL); /* * If we already have something in the stack and we're * in an expression, then rewind til we're not any more. */ while (parent->args == parent->expectargs) parent = parent->parent; + if (tok == EQN_TOK_FUNC) { + for (cur = parent; cur != NULL; cur = cur->parent) + if (cur->font != EQNFONT_NONE) + break; + if (cur == NULL || cur->font != EQNFONT_ROMAN) { + parent = eqn_box_alloc(ep, parent); + parent->type = EQN_LISTONE; + parent->font = EQNFONT_ROMAN; + parent->expectargs = 1; + } + } cur = eqn_box_alloc(ep, parent); cur->type = EQN_TEXT; for (i = 0; i < EQNSYM__MAX; i++) @@ -1096,6 +1115,8 @@ this_tok: parent->args == parent->expectargs) parent = parent->parent; break; + default: + abort(); } goto next_tok; } |