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https://github.com/freebsd/freebsd-src.git
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0d18307afc
input fields. It reads a template file passed to init_forms(char *) and creates a curses based form editor. See the examples directory for a basic demo.
150 lines
3.0 KiB
Plaintext
150 lines
3.0 KiB
Plaintext
%{
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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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#include <ncurses.h>
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#include <forms.h>
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extern struct form *form;
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struct field *cur_field;
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int id,next, up, down, left, right;
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%}
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%start file
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%union {
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int ival;
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char *sval;
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}
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%token <sval> STRING
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%token <ival> NUMBER
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%token <ival> INPUT
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%token <ival> TEXT
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%token <ival> FORM
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%type <sval> String
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%%
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file : /* Empty */
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| file form
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| file fields
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| error
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;
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form : FORM NUMBER NUMBER NUMBER NUMBER
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{
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form = (struct form *) malloc(sizeof(struct form));
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if (!form)
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return(-1);
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form->x = $2;
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form->y = $3;
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form->height = $4;
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form->width = $5;
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form->fields = 0;
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}
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;
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fields : input
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| text
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;
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input : INPUT NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER NUMBER String NUMBER NUMBER NUMBER NUMBER String
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{
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if (alloc_field() == -1)
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return(-1);
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cur_field->field_id = $2;
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/*
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* These will hold addresses but store
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* the field id's in them temporarily
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*/
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cur_field->next = (struct field *) $3;
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cur_field->up = (struct field *) $4;
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cur_field->down = (struct field *) $5;
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cur_field->left = (struct field *) $6;
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cur_field->right = (struct field *) $7;
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cur_field->type = FORM_FTYPE_INPUT;
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cur_field->entry.input.y_prompt = $8;
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cur_field->entry.input.x_prompt = $9;
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cur_field->entry.input.prompt_width = $10;
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cur_field->entry.input.prompt_attr = FORM_DEFAULT_ATTR;
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cur_field->entry.input.prompt = (char *) malloc($10+1);
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if (!cur_field->entry.input.prompt)
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return(-1);
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strncpy(cur_field->entry.input.prompt, $11, $10);
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cur_field->entry.input.prompt[$10] = 0;
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cur_field->entry.input.y_field = $12;
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cur_field->entry.input.x_field = $13;
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cur_field->entry.input.field_width = $14;
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cur_field->entry.input.max_field_width = $15;
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cur_field->entry.input.field = (char *) malloc(strlen($16));
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cur_field->entry.input.field_attr = FORM_DEFAULT_ATTR;
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if (!cur_field->entry.input.field)
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return(-1);
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strcpy(cur_field->entry.input.field, $16);
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}
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;
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text : TEXT NUMBER NUMBER String
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{
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if (alloc_field() == -1)
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return(-1);
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cur_field->field_id = 0;
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cur_field->type = FORM_FTYPE_TEXT;
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cur_field->entry.text.y = $2;
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cur_field->entry.text.x = $3;
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cur_field->entry.text.attr = FORM_DEFAULT_ATTR;
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cur_field->entry.text.text = (char *) malloc(strlen($4));
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if (!cur_field->entry.text.text)
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return (-1);
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strcpy(cur_field->entry.text.text, $4);
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}
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;
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String : STRING
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{
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char *t, *old, *new;
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t = strdup($1);
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free($1);
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/*
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* Deal with any escaped characters,
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* only works for " and \ really.
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*/
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for (old=t, new=t; *old; old++, new++) {
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if (*old == '\\')
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old++;
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*new = *old;
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}
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*new = '\0';
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$$ = t;
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}
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%%
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void
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yyerror(char *s)
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{
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printf("%s\n", s);
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exit(1);
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}
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int
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alloc_field()
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{
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if (!form->fields) {
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form->fields = (struct field *) malloc(sizeof(struct field));
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if (!form->fields)
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return(-1);
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cur_field = form->fields;
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} else {
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cur_field->link = (struct field *) malloc(sizeof(struct field));
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if (!cur_field->link)
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return(-1);
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cur_field = cur_field->link;
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}
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return(0);
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}
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