ref: e3aee39a389700ad821a1619f114e226c1bd42d0
dir: /sys/src/cmd/mothra/html.h/
/* * Parameters */ #define NSTACK 100 /* html grammar is not recursive, so 30 or so should do */ #define NHBUF 8192 /* Input buffer size */ #define NPEEKC 3 /* Maximum lookahead */ #define NTOKEN 65536 /* Maximum token length */ #define NATTR 512 /* Maximum number of attributes of a tag */ typedef struct Pair Pair; typedef struct Tag Tag; typedef struct Stack Stack; typedef struct Hglob Hglob; typedef struct Form Form; typedef struct Entity Entity; struct Pair{ char *name; char *value; }; struct Entity{ char *name; Rune value; }; struct Tag{ char *name; int action; }; struct Stack{ int tag; /* html tag being processed */ int pre; /* in preformatted text? */ int font; /* typeface */ int size; /* point size of text */ int sub; /* < 0 superscript, > 0 subscript */ int margin; /* left margin position */ int indent; /* extra indent at paragraph start */ int number; /* paragraph number */ int ismap; /* flag of <img> */ int isscript; /* inside <script> */ int strike; /* flag of <strike> */ int width; /* size of image */ int height; char *image; /* arg of <img> */ char *link; /* arg of <a href=...> */ char *name; /* arg of <a name=...> */ }; /* * Globals -- these are packed up into a struct that gets passed around * so that multiple parsers can run concurrently */ struct Hglob{ char *tp; /* pointer in text buffer */ char *name; /* input file name */ int hfd; /* input file descriptor */ char hbuf[NHBUF]; /* input buffer */ char *hbufp; /* next character in buffer */ char *ehbuf; /* end of good characters in buffer */ int heof; /* end of file flag */ int peekc[NPEEKC]; /* characters to re-read */ int npeekc; /* # of characters to re-read */ char token[NTOKEN]; /* if token type is TEXT */ Pair attr[NATTR]; /* tag attribute/value pairs */ int nsp; /* # of white-space characters before TEXT token */ int spacc; /* place to accumulate more spaces */ /* if negative, won't accumulate! */ int tag; /* if token type is TAG or END */ Stack stack[NSTACK]; /* parse stack */ Stack *state; /* parse stack pointer */ int lineno; /* input line number */ int linebrk; /* flag set if we require a line-break in output */ int para; /* flag set if we need an indent at the break */ char *text; /* text buffer */ char *etext; /* end of text buffer */ Form *form; /* data for form under construction */ Www *dst; /* where the text goes */ }; /* * Token types */ enum{ TAG=1, ENDTAG, TEXT, }; /* * Magic characters corresponding to * literal < followed by / ! or alpha, * literal > and * end of file */ #define STAG 65536 #define ETAG 65537 #define EOF -1 /* * fonts */ enum{ ROMAN, ITALIC, BOLD, CWIDTH, }; /* * font sizes */ enum{ SMALL, NORMAL, LARGE, ENORMOUS, }; /* * length direction */ enum{ HORIZ, VERT, }; int strtolength(Hglob *g, int dir, char *str); /* * Token names for the html parser. * Tag_end corresponds to </end> tags. * Tag_text tags text not in a tag. * Those two must follow the others. */ enum{ Tag_comment, Tag_a, Tag_abbr, Tag_acronym, Tag_address, Tag_applet, Tag_audio, Tag_b, Tag_base, Tag_blockquot, Tag_body, Tag_br, Tag_button, Tag_center, Tag_cite, Tag_code, Tag_dd, Tag_del, Tag_div, Tag_dfn, Tag_dir, Tag_dl, Tag_dt, Tag_em, Tag_embed, Tag_font, Tag_form, Tag_frame, /* rm 5.8.97 */ Tag_h1, Tag_h2, Tag_h3, Tag_h4, Tag_h5, Tag_h6, Tag_head, Tag_hr, Tag_html, Tag_i, Tag_iframe, Tag_img, Tag_image, Tag_input, Tag_ins, Tag_isindex, Tag_kbd, Tag_key, Tag_li, Tag_link, Tag_listing, Tag_menu, Tag_meta, Tag_nextid, Tag_object, Tag_ol, Tag_option, Tag_p, Tag_plaintext, Tag_pre, Tag_s, Tag_samp, Tag_script, Tag_select, Tag_span, Tag_strike, Tag_strong, Tag_style, Tag_sub, Tag_sup, Tag_source, Tag_table, /* rm 3.8.00 */ Tag_td, Tag_th, Tag_textarea, Tag_title, Tag_tr, Tag_tt, Tag_u, Tag_ul, Tag_var, Tag_video, Tag_wbr, Tag_xmp, Tag_end, /* also used to indicate unrecognized start tag */ Tag_text, }; enum{ NTAG=Tag_end, END=1, /* tag must have a matching end tag */ NOEND, /* tag must not have a matching end tag */ OPTEND, /* tag may have a matching end tag */ ERR, /* tag must not occur */ }; Tag tag[]; void rdform(Hglob *); void endform(Hglob *); char *pl_getattr(Pair *, char *); int pl_hasattr(Pair *, char *); void pl_htmloutput(Hglob *, int, char *, Field *); #pragma incomplete Form #pragma incomplete Field