diff options
Diffstat (limited to 'src/scheme/ao_scheme_port.c')
| -rw-r--r-- | src/scheme/ao_scheme_port.c | 193 |
1 files changed, 0 insertions, 193 deletions
diff --git a/src/scheme/ao_scheme_port.c b/src/scheme/ao_scheme_port.c deleted file mode 100644 index b5e5d8dc..00000000 --- a/src/scheme/ao_scheme_port.c +++ /dev/null @@ -1,193 +0,0 @@ -/* - * Copyright © 2018 Keith Packard <keithp@keithp.com> - * - * This program is free software; you can redistribute it and/or modify - * it under the terms of the GNU General Public License as published by - * the Free Software Foundation, either version 2 of the License, or - * (at your option) any later version. - * - * This program is distributed in the hope that it will be useful, but - * WITHOUT ANY WARRANTY; without even the implied warranty of - * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU - * General Public License for more details. - */ - -#include "ao_scheme.h" - -#ifdef AO_SCHEME_FEATURE_PORT - -static void port_mark(void *addr) -{ - (void) addr; -} - -static int port_size(void *addr) -{ - (void) addr; - return sizeof(struct ao_scheme_port); -} - -static void port_move(void *addr) -{ - struct ao_scheme_port *port = addr; - - (void) ao_scheme_poly_move(&port->next, 0); -} - -const struct ao_scheme_type ao_scheme_port_type = { - .mark = port_mark, - .size = port_size, - .move = port_move, - .name = "port", -}; - -void -ao_scheme_port_write(FILE *out, ao_poly v, bool write) -{ - (void) write; - ao_scheme_fprintf(out, "#port<%d>", fileno(ao_scheme_poly_port(v)->file)); -} - -ao_poly ao_scheme_stdin, ao_scheme_stdout, ao_scheme_stderr; - -ao_poly ao_scheme_open_ports; - -void -ao_scheme_port_check_references(void) -{ - struct ao_scheme_port *p; - - for (p = ao_scheme_poly_port(ao_scheme_open_ports); p; p = ao_scheme_poly_port(p->next)) { - if (!ao_scheme_marked(p)) - ao_scheme_port_close(p); - } -} - -struct ao_scheme_port * -ao_scheme_port_alloc(FILE *file, bool stayopen) -{ - struct ao_scheme_port *p; - - p = ao_scheme_alloc(sizeof (struct ao_scheme_port)); - if (!p) - return NULL; - p->type = AO_SCHEME_PORT; - p->stayopen = stayopen; - p->file = file; - p->next = ao_scheme_open_ports; - ao_scheme_open_ports = ao_scheme_port_poly(p); - return p; -} - -void -ao_scheme_port_close(struct ao_scheme_port *port) -{ - ao_poly *prev; - struct ao_scheme_port *ref; - - if (port->file && !port->stayopen) { - fclose(port->file); - port->file = NULL; - for (prev = &ao_scheme_open_ports; (ref = ao_scheme_poly_port(*prev)); prev = &ref->next) - if (ref == port) { - *prev = port->next; - break; - } - } -} - -ao_poly -ao_scheme_do_portp(struct ao_scheme_cons *cons) -{ - return ao_scheme_do_typep(_ao_scheme_atom_port3f, AO_SCHEME_PORT, cons); -} - -ao_poly -ao_scheme_do_port_openp(struct ao_scheme_cons *cons) -{ - struct ao_scheme_port *port; - - if (!ao_scheme_parse_args(_ao_scheme_atom_port2dopen3f, cons, - AO_SCHEME_PORT, &port, - AO_SCHEME_ARG_END)) - return AO_SCHEME_NIL; - return port->file ? _ao_scheme_bool_true : _ao_scheme_bool_false; -} - -static ao_poly -ao_scheme_do_open_file(ao_poly proc, struct ao_scheme_cons *cons, const char *mode) -{ - FILE *file; - struct ao_scheme_string *name; - - if (!ao_scheme_parse_args(proc, cons, - AO_SCHEME_STRING, &name, - AO_SCHEME_ARG_END)) - return AO_SCHEME_NIL; - file = fopen(name->val, mode); - if (!file) - return ao_scheme_error(AO_SCHEME_FILEERROR, - "%v: no such file \"%v\"", - proc, name); - return ao_scheme_port_poly(ao_scheme_port_alloc(file, false)); -} - -ao_poly -ao_scheme_do_open_input_file(struct ao_scheme_cons *cons) -{ - return ao_scheme_do_open_file(_ao_scheme_atom_open2dinput2dfile, cons, "r"); -} - -ao_poly -ao_scheme_do_open_output_file(struct ao_scheme_cons *cons) -{ - return ao_scheme_do_open_file(_ao_scheme_atom_open2doutput2dfile, cons, "w"); -} - -ao_poly -ao_scheme_do_close_port(struct ao_scheme_cons *cons) -{ - struct ao_scheme_port *port; - - if (!ao_scheme_parse_args(_ao_scheme_atom_port2dopen3f, cons, - AO_SCHEME_PORT, &port, - AO_SCHEME_ARG_END)) - return AO_SCHEME_NIL; - ao_scheme_port_close(port); - return _ao_scheme_bool_true; -} - -ao_poly -ao_scheme_do_current_input_port(struct ao_scheme_cons *cons) -{ - if (!ao_scheme_parse_args(_ao_scheme_atom_current2dinput2dport, cons, - AO_SCHEME_ARG_END)) - return AO_SCHEME_NIL; - if (!ao_scheme_stdin) - ao_scheme_stdin = ao_scheme_port_poly(ao_scheme_port_alloc(stdin, true)); - return ao_scheme_stdin; -} - -ao_poly -ao_scheme_do_current_output_port(struct ao_scheme_cons *cons) -{ - if (!ao_scheme_parse_args(_ao_scheme_atom_current2doutput2dport, cons, - AO_SCHEME_ARG_END)) - return AO_SCHEME_NIL; - if (!ao_scheme_stdout) - ao_scheme_stdout = ao_scheme_port_poly(ao_scheme_port_alloc(stdout, true)); - return ao_scheme_stdout; -} - -ao_poly -ao_scheme_do_current_error_port(struct ao_scheme_cons *cons) -{ - if (!ao_scheme_parse_args(_ao_scheme_atom_current2derror2dport, cons, - AO_SCHEME_ARG_END)) - return AO_SCHEME_NIL; - if (!ao_scheme_stderr) - ao_scheme_stderr = ao_scheme_port_poly(ao_scheme_port_alloc(stderr, true)); - return ao_scheme_stderr; -} - -#endif /* AO_SCHEME_FEATURE_PORT */ |