freebsd-dev/usr.bin/fib/parser.y
1995-02-01 04:08:19 +00:00

854 lines
19 KiB
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%{
/*-
* Copyright (c) 1995
* Paul Richards. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer,
* verbatim and that no modifications are made prior to this
* point in the file.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Paul Richards.
* 4. The name Paul Richards may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY PAUL RICHARDS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL PAUL RICHARDS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
*/
#include <stdlib.h>
#include <string.h>
#include <stdio.h>
#include <forms.h>
char *cpstr(char *);
extern int yyleng;
int lineno = 1;
int charno = 1;
int off;
char *fieldname;
char *defname;
char *formname;
char *startname;
char *colortable;
char *formattr;
char *text;
char *label;
char *function;
char *up, *down, *left, *right, *next;
int height, width;
int y, x;
int width;
int limit;
char *attr;
char *selattr;
int type;
int lbl_flag;
int selected, no_options=0;
extern FILE *outf;
struct field_list {
char *fieldname;
char *defname;
char *attr;
char *selattr;
char *up;
char *down;
char *left;
char *right;
char *next;
struct field field;
struct field_list *next_field;
};
struct field_list *cur_field_def;
struct field_list *field_defs;
struct field_list *field;
struct field_list *cur_form_field;
struct field_list *form_field_list;
struct form_list {
char *formname;
struct form form;
struct form_list *next;
struct field_list *fields;
char *startfield;
char *formattr;
char *colortable;
};
struct form_list *cur_form;
struct form_list *form_list;
struct form_list *form;
struct menu_list {
char *option;
struct menu_list *next;
};
struct menu_list *cur_menu;
struct menu_list *menu_list;
struct menu_list *menu;
struct color_list {
char *foreground;
char *background;
struct color_list *next;
};
struct color_list *pair;
struct color_list *cur_pair;
struct color_list *color_list;
struct color_table {
char *tablename;
struct color_list *pairs;
struct color_table *next;
};
struct color_table *color_table;
struct color_table *cur_table;
struct color_table *color_tables;
%}
%union {
int ival;
char *sval;
}
%token <ival> FORM
%token <ival> COLORTABLE
%token <ival> COLOR
%token <ival> BLACK
%token <ival> RED
%token <ival> GREEN
%token <ival> YELLOW
%token <ival> BLUE
%token <ival> MAGENTA
%token <ival> CYAN
%token <ival> WHITE
%token <ival> PAIR
%token <sval> NAME
%token <sval> STRING
%token <ival> AT
%token <ival> AS
%token <ival> HEIGHT
%token <ival> EQUALS
%token <ival> NUMBER
%token <ival> WIDTH
%token <ival> STARTFIELD
%token <ival> COMMA
%token <ival> LBRACE
%token <ival> RBRACE
%token <ival> TEXT
%token <ival> ATTR
%token <ival> SELATTR
%token <ival> DEFAULT
%token <ival> LABEL
%token <ival> LIMIT
%token <ival> SELECTED
%token <ival> OPTIONS
%token <ival> ACTION
%token <ival> FUNC
%token <ival> LINK
%token <ival> UP
%token <ival> DOWN
%token <ival> LEFT
%token <ival> RIGHT
%token <ival> NEXT
%token <ival> DEF
%type <sval> a_color
%start spec
%%
spec: /* empty */
| spec fields
| spec forms
| spec colours
;
colours: COLOR NAME
{
color_table = malloc(sizeof (struct color_table));
if (!color_table) {
fprintf(stderr, "Couldn't allocate memory for a color table\n");
exit (1);
}
color_table->tablename = cpstr($2);
}
LBRACE color_pairs RBRACE
{
color_table->pairs = color_list;
cur_pair = 0;
if (!cur_table) {
color_tables = color_table;
cur_table = color_table;
} else {
cur_table->next = color_table;
cur_table = color_table;
}
}
;
color_pairs: /* empty */
| color_pairs pair
;
pair: PAIR EQUALS a_color
{
pair = malloc(sizeof (struct color_list));
if (!pair) {
fprintf(stderr, "Couldn't allocate memory for a color pair\n");
exit(1);
}
pair->foreground = cpstr($3);
}
COMMA a_color
{
pair->background = cpstr($6);
if (!cur_pair) {
color_list = pair;
cur_pair = pair;
} else {
cur_pair->next = pair;
cur_pair = pair;
}
}
;
a_color: BLACK
{ $$ = "COLOR_BLACK"; }
| RED
{ $$ = "COLOR_RED"; }
| GREEN
{ $$ = "COLOR_GREEN"; }
| YELLOW
{ $$ = "COLOR_YELLOW"; }
| BLUE
{ $$ = "COLOR_BLUE"; }
| MAGENTA
{ $$ = "COLOR_MAGENTA"; }
| CYAN
{ $$ = "COLOR_CYAN"; }
| WHITE
{ $$ = "COLOR_WHITE"; }
;
forms: FORM NAME
{ formname = cpstr($2); }
AT coord
{
form = malloc(sizeof (struct form_list));
if (!form) {
fprintf(stderr,"Failed to allocate memory for form\n");
exit(1);
}
form->form.y = y;
form->form.x = x;
}
LBRACE formspec RBRACE
{
form->startfield = startname;
form->formname = formname;
form->colortable = colortable;
form->form.height = height;
form->form.width = width;
form->formattr = formattr;
form->fields = form_field_list;
cur_form_field = 0;
if (!cur_form) {
form_list = form;
cur_form = form;
} else {
cur_form->next = form;
cur_form = form;
}
}
;
formspec: height width startfield colortable formattr fieldlocs
;
startfield: /* empty */
{ startname = 0;
printf("Warning: No start field specified for form %s\n", formname);
}
| STARTFIELD EQUALS NAME
{ startname = cpstr($3); }
;
colortable: /*empty */
{ colortable = 0; }
| COLORTABLE EQUALS NAME
{ colortable = cpstr($3); }
;
formattr: /* empty */
{ formattr = 0; }
| ATTR EQUALS NAME
{ formattr = cpstr($3); }
;
fieldlocs: /* empty */
| fieldlocs field_at
;
field_at: NAME
{ fieldname = cpstr($1); }
field_def AT coord
{
field = malloc(sizeof (struct field_list));
if (!field) {
fprintf(stderr,"Failed to allocate memory for form field\n");
exit(1);
}
field->fieldname = fieldname;
if (!defname)
field->defname = fieldname;
else
field->defname = defname;
field->field.y = y;
field->field.x = x;
}
links
{
field->up = up;
field->down = down;
field->left = left;
field->right = right;
field->next = next;
up = 0;
down = 0;
left = 0;
right = 0;
next = 0;
if (!cur_form_field) {
form_field_list = field;
cur_form_field = field;
} else {
cur_form_field->next_field = field;
cur_form_field = field;
}
}
;
fields: NAME
{ defname = cpstr($1); }
field_spec
{ define_field(defname, 0); }
;
field_def: /* empty */
{ defname = 0; }
| LBRACE NAME
{ defname = cpstr($2); }
RBRACE
| field_spec
{ defname = fieldname; define_field(defname, 0); }
;
field_spec: LBRACE height width attr selattr type RBRACE
;
links: /* empty */
| links COMMA conns
;
conns: UP EQUALS NAME
{ up = cpstr($3); }
| DOWN EQUALS NAME
{ down = cpstr($3); }
| LEFT EQUALS NAME
{ left = cpstr($3); }
| RIGHT EQUALS NAME
{ right = cpstr($3); }
| NEXT EQUALS NAME
{ next = cpstr($3); }
;
type: textfield
| inputfield
| menufield
| actionfield
;
textfield: TEXT EQUALS STRING
{ type = F_TEXT; text = cpstr($3); }
;
inputfield: inputspec
{ type = F_INPUT; }
;
inputspec: LABEL EQUALS STRING limit
{ lbl_flag = 1; label = cpstr($3); }
| DEFAULT EQUALS STRING limit
{ lbl_flag = 0; label = cpstr($3); }
;
limit: /* empty */
| LIMIT EQUALS NUMBER
{ limit = $3; }
menufield: SELECTED EQUALS NUMBER OPTIONS EQUALS menuoptions
{ type = F_MENU; selected = $3; }
;
menuoptions: menuoption
| menuoptions COMMA menuoption
;
menuoption: STRING
{ menu = malloc(sizeof(struct menu_list));
if (!menu) {
fprintf(stderr,
"Couldn't allocate memory for menu option\n");
exit (1);
}
menu->option = cpstr($1);
++no_options;
if (!cur_menu) {
menu_list = menu;
cur_menu = menu;
} else {
cur_menu->next = menu;
cur_menu = menu;
}
}
;
actionfield: ACTION EQUALS STRING FUNC EQUALS NAME
{ type = F_ACTION; text = cpstr($3); function = cpstr($6); }
;
height: /* empty */
{ height = 0; }
| HEIGHT EQUALS NUMBER
{ height = $3; }
;
width: /* empty */
{ width = 0; }
| WIDTH EQUALS NUMBER
{ width = $3; }
;
attr: /* empty */
{ attr = 0; }
| ATTR EQUALS NAME
{ attr = cpstr($3); }
;
selattr: /* empty */
{ selattr = 0; }
| SELATTR EQUALS NAME
{ selattr = cpstr($3); }
;
coord: NUMBER COMMA NUMBER
{ y = $1; x = $3; }
;
%%
yyerror (char *error)
{
fprintf(stderr, "%s at line %d\n",error, lineno);
exit(1);
}
yywrap()
{
return(1);
}
char *
cpstr(char *ostr)
{
char *nstr;
nstr = malloc(strlen(ostr)+1);
if (!nstr) {
fprintf(stderr, "Couldn't allocate memory for string\n");
exit(1);
}
strcpy(nstr, ostr);
return (nstr);
}
output_field(struct field_list *fields, char *fieldname, FILE *outf)
{
struct menu_list *menu;
int i, lim, len;
switch(fields->field.type) {
case F_TEXT:
if (!fieldname) {
if (!fields->field.width)
fields->field.width = strlen(fields->field.field.text->text);
if (!fields->field.height)
calc_field_height(&fields->field, fields->field.field.text->text);
fprintf(outf, "struct text_field %s = {\"%s\"};\n",
fields->defname,
fields->field.field.text->text);
}
break;
case F_INPUT:
/* Force height to one regardless */
fields->field.height = 1;
if (!fields->field.width && !fields->field.field.input->limit) {
fields->field.width = strlen(fields->field.field.input->label);
fields->field.field.input->limit = fields->field.width;
} else if (!fields->field.width)
fields->field.width = fields->field.field.input->limit;
else if (!fields->field.field.input->limit)
fields->field.field.input->limit = fields->field.width;
if (fields->field.field.input->limit < fields->field.width)
fields->field.width = fields->field.field.input->limit;
fprintf(outf, "struct input_field %s = {%d, \"%s\", 0, %d};\n",
(fieldname)?fieldname:fields->defname,
(fields->field.field.input->lbl_flag ? 1 : 0),
fields->field.field.input->label,
fields->field.field.input->limit);
break;
case F_MENU:
/* Force height to one regardless */
fields->field.height = 1;
if (!fieldname) {
fprintf(outf, "char *%s_options[] = {",
fields->defname);
menu = (struct menu_list *)fields->field.field.menu->options;
lim = 0;
for (i=0; i < fields->field.field.menu->no_options - 1; i++) {
fprintf(outf, "\"%s\", ", menu->option);
len = strlen(menu->option);
if (len > lim)
lim = len;
menu = menu->next;
}
if (!fields->field.width)
fields->field.width = lim;
fprintf(outf, "\"%s\"};\n", menu->option);
}
fprintf(outf, "struct menu_field %s = {%d, %d, %s_options};\n",
(fieldname)?fieldname:fields->defname,
fields->field.field.menu->no_options,
fields->field.field.menu->selected,
fields->defname);
break;
case F_ACTION:
if (!fields->field.width)
fields->field.width = strlen(fields->field.field.action->text);
if (!fields->field.height)
calc_field_height(&fields->field, fields->field.field.action->text);
fprintf(outf, "struct action_field %s = {\"%s\", &%s};\n",
(fieldname)?fieldname:fields->defname,
fields->field.field.action->text,
fields->field.field.action->fn);
break;
default:
break;
}
}
output_forms(FILE *outf)
{
struct form_list *forms;
struct field_list *fields;
/* Output the general field definitions */
for (fields = field_defs; fields; fields=fields->next_field)
output_field(fields, 0, outf);
for(forms=form_list; forms; forms = forms->next) {
parse_form(forms, outf);
}
}
output_coltab(struct color_table *coltab, FILE *outf)
{
struct color_list *pairs;
/* Output the color pair table */
fprintf(outf, "struct col_pair %s_coltab[] = {\n",coltab->tablename);
if (color_list) {
for(pairs=coltab->pairs; pairs; pairs=pairs->next)
fprintf(outf, "\t{%s, %s},\n",
pairs->foreground, pairs->background);
} else {
/* Output a default color table */
fprintf(outf, "\t{7, 0}\n};");
}
fprintf(outf, "\t{-1, -1}\n};\n\n");
}
parse_form(struct form_list *form, FILE *outf)
{
struct field_list *fields;
struct field_list *defs;
struct field_list *info;
struct color_table *coltab;
char *fieldname;
int no_fields = 0;
/* If there's a color table defined find it and output it */
if (form->colortable) {
for (coltab = color_tables; coltab; coltab = coltab->next)
if (!strcmp(form->colortable, coltab->tablename)) {
output_coltab(coltab, outf);
break;
}
if (!coltab) {
fprintf(stderr, "Color table for form %s not found\n",
form->formname);
form->colortable = 0;
}
}
/*
* Run through the specific instances of the fields referenced by
* this form, filling in the link structures and outputing a field
* definition for this particular instance.
*/
for(fields=form->fields; fields; fields=fields->next_field) {
/* Fill in link values */
fields->field.up = field_id(fields->up, form->fields);
fields->field.down = field_id(fields->down, form->fields);
fields->field.left = field_id(fields->left, form->fields);
fields->field.right = field_id(fields->right, form->fields);
fields->field.next = field_id(fields->next, form->fields);
/* Search field list for definition of this field */
for(defs=field_defs; defs; defs=defs->next_field) {
if (!strcmp(fields->defname, defs->defname))
break;
}
if (!defs) {
fprintf(stderr,
"%s not found in field definitions, field not output\n",
fields->defname);
fields->fieldname = 0;
} else {
fields->field.type = defs->field.type;
fields->field.height = defs->field.height;
fields->field.width = defs->field.width;
fields->attr = defs->attr;
fields->selattr = defs->selattr;
if (strcmp(fields->defname, fields->fieldname))
output_field(defs, fields->fieldname, outf);
}
}
/* Output the field table for this form */
fprintf(outf, "struct field %s_fields[] = {\n", form->formname);
for(fields=form->fields; fields; fields=fields->next_field) {
if (fields->fieldname) {
++no_fields;
fprintf(outf, "\t{%d, %d, %d, %d, %d, %s, %s, ",
fields->field.type, fields->field.y, fields->field.x,
fields->field.height, fields->field.width,
(fields->attr ? fields->attr : "F_DEFATTR"),
(fields->selattr ? fields->selattr : "F_SELATTR"));
fprintf(outf, "%d, %d, %d, %d, %d, ",
fields->field.next,
fields->field.up,
fields->field.down,
fields->field.left,
fields->field.right);
fprintf(outf, "(struct text_field *)&%s},\n",
fields->fieldname);
}
}
fprintf(outf, "\t{%d, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0}\n};\n", F_END);
/* If no start field set then find first non-text field */
if (!form->startfield)
for (fields = form->fields; fields; fields = fields->next_field)
if (fields->field.type != F_TEXT) {
form->startfield = fields->fieldname;
break;
}
fprintf(outf,
"struct form %s = {%d, %d, %d, %s_fields, %d, %d, %d, %d, %s, ",
form->formname, no_fields,
field_id(form->startfield, form->fields),
field_id(form->startfield, form->fields),
form->formname, form->form.height, form->form.width,
form->form.y, form->form.x,
(form->formattr ? form->formattr : "F_DEFATTR"));
if (form->colortable)
fprintf(outf, "%s_coltab, ", form->colortable);
else
fprintf(outf, "0, ");
fprintf(outf, "0};\n\n");
}
/*
* Search a field list for a particular fieldname
* and return an integer id for that field based on
* it's position in the list [0..n]. Return -1 if
* there's no match.
*/
int
field_id(char *fieldname, struct field_list *field_list)
{
struct field_list *fields;
int id=0;
/* If the strings null then fail immediately */
if (!fieldname)
return (-1);
for (fields = field_list; fields; fields = fields->next_field, id++) {
if (!strcmp(fieldname, fields->fieldname))
return (id);
}
fprintf(stderr, "Field %s, not found in specification\n", fieldname);
return (-1);
}
/* Calculate a default height for a field */
calc_field_height(struct field *field, char *string)
{
int len;
len = strlen(string);
if (!field->width) {
/*
* This is a failsafe, this routine shouldn't be called
* with a width of 0, the width should be determined
* first.
*/
field->height = 1;
return;
}
if (len < field->width) {
field->height = 1;
return;
} else
field->height = len / field->width;
if ((field->height*field->width) < len)
field->height++;
return;
}
/* Add a field to the pre-defined fields list */
define_field(char *defname, char *fieldname)
{
field = malloc(sizeof (struct field_list));
if (!field) {
fprintf(stderr,"Failed to allocate memory for form field\n");
exit(1);
}
field->fieldname = fieldname;
field->defname = defname;
field->field.type = type;
field->field.height = height;
field->field.width = width;
field->attr = attr;
field->selattr = selattr;
switch (type) {
case F_TEXT:
field->field.field.text = malloc(sizeof (struct text_field));
if (!field->field.field.text) {
fprintf(stderr,
"Failed to allocate memory for text field\n");
exit (1);
}
field->field.field.text->text = text;
break;
case F_INPUT:
field->field.field.input = malloc(sizeof (struct input_field));
if (!field->field.field.input) {
fprintf(stderr,
"Failed to allocate memory for input field\n");
exit (1);
}
field->field.field.input->lbl_flag = lbl_flag;
field->field.field.input->label = label;
field->field.field.input->limit = limit;
break;
case F_MENU:
field->field.field.menu = malloc(sizeof (struct menu_field));
if (!field->field.field.menu) {
fprintf(stderr,
"Failed to allocate memory for menu field\n");
exit (1);
}
field->field.field.menu->selected = selected;
field->field.field.menu->no_options = no_options;
no_options = 0;
field->field.field.menu->options = (char **)menu_list;
cur_menu = 0;
break;
case F_ACTION:
field->field.field.action = malloc(sizeof (struct action_field));
if (!field->field.field.action) {
fprintf(stderr,
"Failed to allocate memory for action field\n");
exit (1);
}
field->field.field.action->text = text;
field->field.field.action->fn = (void *) function;
break;
default:
break;
}
if (!cur_field_def) {
field_defs = field;
cur_field_def = field;
} else {
cur_field_def->next_field = field;
cur_field_def = field;
}
width=0;
height = 0;
attr=0;
selattr=0;
limit=0;
}