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* * configure: Added check to detect POSIX sleep function.Kaz Kylheku2013-11-271-2/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): Register new open_tail function as intrinsic. * match.c (complex_snarf, complex_stream): Update calls to make_stdio_stream and make_pipe_stream to take fewer arguments. (match_files): Support a stream object as a data source specification in place of a string. * parser.l (parse_reset): Update call to make_stdio_stream to take fewer arguments. * stream.c: Inclusion of <unistd.h> made properly conditional. (struct stdio_handle): pid member defined as pid_t only if we have fork functionality, otherwise defined as int. (tail_get_line, tail_get_char, tail_get_byte): New static functions. (tail_ops): New static structure. (make_stdio_stream_common): New static structure. (make_stdio_stream, make_pipe_stream): These functions lose the input and output parameters, which ended up never used. Reimplemented in terms of new common function. (make_tail_stream): New function. (make_pipevp_stream): Reimplemented in terms of new common function. (open_file, open_command): Simplified by removal of useless local variables and their computation, which used to be extra arguments to make_stdio_stream and make_pipe_stream. (open_tail): New function. (stream_init): Calls to make_stdio_stream updated. * stream.h (make_stdio_stream, make_pipe_stream): Declarations updated. (make_tail_stream, open_tail): Declared. * txr.c (txr_main): Calls to make_stdio_stream updated.
* Stream-seeking functionality.Kaz Kylheku2013-11-261-0/+6
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Bugfix in stdio_flush: check FILE * handle for null. Minor cleanups. * eval.c (eval_init): Register seek_stream as intrinsic. * stream.c (from_start_k, from_current_k, from_end_k): New symbol variables. (strm_whence): New enum. (strm_ops): New member, seek. (stdio_maybe_write_error): Renamed to stdio_maybe_error; takes new string argument to describe action. (stdio_put_string, stdio_put_char, stdio_put_byte): Updated call to stdio_maybe_error. (stdio_flush): Updated call to stdio_maybe_error. Check handle for null. (stdio_seek): New static function. (stdio_ops): Added stdio_seek. (pipe_ops, string_in_ops, byte_in_ops, string_out_ops, strlist_out_ops, dir_ops): Added explicit zero entries and comments for unimplemented functions. (seek_stream): New function. (stream_init): New keyword symbols interned. * stream.h (from_start_k, from_current_k, from_end_k): New variables declared. (dev_k, ino_k, mode_k, nlink_k, uid_k, gid_k, rdev_k, size_k, blksize_k, blocks_k, atime_k, mtime_k, ctime_k, s_ifmt, s_iflnk, s_ifreg, s_ifblk, s_ifdir, s_ifchr, s_ififo, s_isuid, s_isgid, s_isvtx, s_irwxu, s_irusr, s_iwusr, s_ixusr, s_irwxg, s_irgrp, s_iwgrp): Existing extern variables declared. (seek_stream): New function declared. * txr.1: Documented seek-stream.
* * arith.c (logtest): New function.Kaz Kylheku2012-09-181-0/+5
| | | | | | | | | | | | | | | | | | | | | | | * eval.c (eval_init): Registered logtest. Registered s-ifmt, s-iflnk, s-ifreg, s-ifblk, s-ifdir, s-ifchr, s-ififo, s-isuid, s-isgid, s-isvtx, s-irwxu, s-irusr, s-iwusr, s-ixusr, s-irwxg, s-irgrp, s-iwgrp, s-ixgrp, s-irwxo, s-iroth, s-iwoth, s-ixoth variables. * lib.h (logtest): Declared. * stream.c (s_ifmt, s_ifsock, s_iflnk, s_ifreg, s_ifblk, s_ifdir, s_ifchr, s_ififo, s_isuid, s_isgid, s_isvtx, s_irwxu, s_irusr, s_iwusr, s_ixusr, s_irwxg, s_irgrp, s_iwgrp, s_ixgrp, s_irwxo, s_iroth, s_iwoth, s_ixoth): New global variables. * stream.h (s_ifmt, s_ifsock, s_iflnk, s_ifreg, s_ifblk, s_ifdir, s_ifchr, s_ififo, s_isuid, s_isgid, s_isvtx, s_irwxu, s_irusr, s_iwusr, s_ixusr, s_irwxg, s_irgrp, s_iwgrp, s_ixgrp, s_irwxo, s_iroth, s_iwoth, s_ixoth): Declared. * txr.1: Documented logtest and s-* variables for stat, as well as open-file and open-directory.
* * configure: Added test for <sys/stat.h>Kaz Kylheku2012-09-111-0/+1
| | | | | | | | | | | | | | | * eval.c: New intrinsic functions "stat" and "prop". * stream.c: Include <sys/stat.h> if we have it. (w_stat, statf): New functions. (val dev_k, ino_k, mode_k, nlink_k, uid_k, val gid_k, rdev_k, size_k, blksize_k, blocks_k; val atime_k, mtime_k, ctime_k): New sybol variables. (stream_init): Intern new keywords symbols. * stream.h (statf): Declared. * txr.1: prop documented. Stub for stat created.
* * eval.c (eval_init): Registered open-command and open-processKaz Kylheku2012-05-181-2/+2
| | | | | | | | | | | | intrinsics. open-pipe is now deprecated but stays for backward compatibility as a synonym for open-command. * stream.c (open_pipe): Renamed to open_command. (open_pipevp): Renamed to open_process. * stream.h (open_pipe, open_pipevp): Declarations updated. * txr.1: Documentation headings updated.
* Implementing new pipe function to get around the limitationKaz Kylheku2012-05-181-0/+1
| | | | | | | | | | | | | | | | | | | | | | | that popen accepts a complete command. We need something which accepts a program name, and a list of arguments, so that we don't have to assemble together a correctly quoted string. popen needs an alternative interface resembling execvp. * eval.c (eval_init): New intrinsic registered, open-pipe-args. * stream.c (struct stdio_handle): New member, pid. (stdio_stream_print): Print the pid, if it is nonzero. (pipevp_close): New close function. (pipe_close): If h->pid is nonzero, it's a new-style pipe, which must be closed with pipev_close. (make_stdio_stream, make_pipe_stream): Initialize new stdio_handle member to zero. (make_pipevp_stream): New static function. (open_pipevp): New function. * stream.h (open_pipevp): Declared. * txr.1: open-pipe-args added to stub section heading.
* Fix the issue properly, once and for all, of how to determineKaz Kylheku2012-02-271-1/+1
| | | | | | | | | | | | | | | | that output has taken place and suppress the printing of bindings. * debug.c (debug): std_output replaced with std_debug. * eval.c (eval_init): Registered new *stddebug* variable. * stream.c (std_debug): New variable. (stdio_put_string): Check that stream is other than std_debug, to determine that output has taken place. * stream.h (std_debug): Declared. * txr.1: Added *stddebug* to documentation stub heading.
* * arith.c: Updated copyright year.Kaz Kylheku2012-02-251-1/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * arith.h: Likewise. * debug.c: Added copyright header. * debug.h: Updated copyright year. * eval.c: Likewise. * eval.h: Likewise. * filter.c: Likewise. * filter.h: Likewise. * gc.c: Likewise. * gc.h: Likewise. * hash.c: Likewise. * hash.h: Likewise. * lib.c: Likewise. * lib.h: Likewise. * match.c: Likewise. * match.h: Likewise. * parser.h: Likewise. * regex.c: Likewise. * regex.h: Likewise. * stream.c: Likewise. * stream.h: Likewise. * txr.c: Likewise, and e-mail address. * txr.h: Updated copyright year. * unwind.c: Likewise. * unwind.h: Likewise.
* * eval.c (eval_init): New put-byte function interned.Kaz Kylheku2012-02-251-0/+1
| | | | | | | | | | * stream.c (struct strm_ops): New member, put_byte. (stdio_put_byte): New function. (stdio_ops, pipe_ops, string_in_ops, byte_in_ops, string_out_ops, strlist_out_ops, dir_ops): Updated. (put_byte): New function. * stream.h (put_byte): Declared.
* Introducing optional arguments.Kaz Kylheku2012-02-211-3/+3
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * debug.c (help, show_bindings): put_string arguments reversed. * eval.c (bind_args): Support colon notation in interpreted function lambda lists for optional arguments. Improved error checking. (apply): Allow optional arguments to be left out. (dwim_loc): Reversed arguments to replace_str, replace_vec, replace_list. (eval_init): Numerous intrinsics now have arguments that are optional. New function rand introduced which reverses arguments relative to random. New intrinsic function hash introduced for alternative construction of hashes. * gc.c (sweep): Reversed arguments to put_char. * hash.c (weak_keys_k, weak_vals_k, equal_based_k): New keyword symbol variables. (hashv): New function. (hash_init): Intern new symbols. * hash.h (weak_keys_k, weak_vals_k, equal_based_k, hashv): Declared. * lib.c (colon_k): New keyword symbol variable. (replace_list, replace_str, replace_vec): Arguments rearranged. (tree_find): testfun becomes optional argument. (int_str): base becomes optional argument. (func_f0, func_f1, func_f2, func_f3, func_f4, func_n0, func_n1, func_n2, func_n3, func_n4, func_f0v, func_f1v, func_f2v, func_f3v, func_f4v, func_n0v, func_n1v, func_n2v, func_n3v, func_n4v, func_interp): Initialize optargs to zero. (func_n0o, func_n1o, func_n2o, func_n3o, func_n4o): New functions. (cobj_print_op): Reversed arguments to put_string. (find): testfun and keyfun become optional arguments. (replace): Parameters rearranged and arguments rearranged in calls to replace_list, replace_str and replace_vec. (obj_init): colon_k initialized. (obj_print, obj_pprint): Arguments reversed, and stream defaults to std_output. Arguments reversed in calls to put_char and put_string. (dump): Arguments reversed in call to put_char. * lib.h (struct func): sizes of minparam, fixparam bitfields adjusted. New bitfield optargs. New unnamed bitfield added so the previous ones add up to 16 bits. (colon_k): Declared. (func_n0o, func_n1o, func_n2o, func_n3o, func_n4o): Declared. (replace_list, replace_str, replace_vec, replace): Declarations updated. * match.c (debuglf, dump_shell_string, dump_byte_string, dump_var, do_output_line, extract): Reversed arguments to put_char and
* Reimplementation of how TXR decides whether to dump bindingsKaz Kylheku2012-02-171-0/+1
| | | | | | | | | | | | | | | or not. This is now done right inside the standard output stream. * match.c (output_produced): Variable removed. (complex_open): Assignment to output_produced removed. * stream.c (output_produced): New global variable. (stdio_put_string, stdio_put_char): Set output_produced to t if the target of the output is stdout. * stream.h (output_produced): Declared. * txr.h (output_produced): Declaration removed.
* * eval.c (eval_init): Register match-fun.Kaz Kylheku2012-02-161-0/+1
| | | | | | | | | | | | | | | * match.c (v_do): Store match context. (match_fun): New function. * match.h (match_fun): Declared. * stream.c (streamp): New function. * stream.h (streamp): Declared. * txr.1: Stub section for match-fun. * txr.vim: Highlight match-fun.
* Adding streams functions to Lisp evaluator.Kaz Kylheku2011-11-281-0/+4
| | | | | | | | | | | | | | | | | | | | | | | | | | | * eval.c (op_let): Bugfix: was not evaluating var init forms. (reg_var): New static function. (eval_init): Registered numerous stream functions and the three standard streams. * lib.c (obj_print, obj_pprint): Modified to return a value. (init): eval_init called after stream_init, because eval needs the three standrad streams prepared. * lib.h (obj_print, obj_pprint): Declarations updated. * stream.c (format): Support t as a shorthand for standard output. (formatv, open_directory, open_file, open_pipe): New functions. (w_opendir): New static function. * stream.h (formatv, open_directory, open_file, open_pipe): Declared. * txr.vim: set iskeyword such that keyword can contain special characters. Set b:current_syntax to "lisp". (txl_keyword): New keyword category populated with TXR Lisp keywords defined as separate category. (txr_list): Contains txl_keyword. (txr_meta): Contains txl_keyword and txr_list.
* Adding a debugger. This is an experimental prototype.Kaz Kylheku2011-11-131-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | * Makefile (OBJS): New object file debug.o. * dep.mk: Updated. * match.c (h_fun): Use debug_begin and debug_end macros to set up a debug frame for backtracing. (match_line, match_files): Call debug_check to give debugger a chance to instrument call. (v_fun): Use debug_begin and debug_end macros to set up a debug frame for backtracing. Call debug_check to give debugger a chance to instrument call. * stream.c (struct strm_ops): New function pointer, flush. (stdio_maybe_write_error): Wrong word in error message corrected. (stdio_flush): New static function. (stdio_ops, pipe_ops): New function entered into tables. (flush_stream): New function. * stream.h (flush_stream): Declared. * txr.c (help): New options documented. (main): call to debug_init added. New debug options parsed and opt_debugger set accordingly. * unwind.c (uw_push_debug, uw_current_frame): New function. * unwind.h (uw_frtype): New enumeration member UW_DBG. (struct uw_debug): New frame variant. (union uw_frame): New member, db. (uw_push_debug, uw_current_frame): Declared, * debug.c: New file. * debug.h: New file.
* Parse error handling improvements.Kaz Kylheku2011-10-261-0/+1
| | | | | | | | | | | | | | | | | | | | | | | | * parser.l (prepared_error_message): New static variable. (yyerror): Emit and clear prepared error message. (yyerrprepf): New static function. (yybadtoken): Function moved into parser.y. (grammar): For irrecoverable lexical errors, stash error message with yyerrprepf and return the special error token ERRTOK to generate a syntax error. I could find no other interface to the parser to make it cleanly exit. * parser.y (ERRTOK): New terminal symbol, does not appear anywhere in the grammar. (spec): Bail after 8 errors, recover to nearest newline, and use yyerrok to clear error situation. (YYEOF): Provided by Bison, conditionally defined for other yacc-s. (yybadtoken): Function moved from parser.l. Checks for the next token being YYEMPTY or YYEOF, and also handles ERRTOK. * stream.c (vformat_to_string): New function. (format): If stream is nil, format to string and return it. * stream.h (vformat_to_string): Declared.
* New features. Strling list output streams in streamKaz Kylheku2011-10-211-0/+2
| | | | | | | | | | | | | | | | | | | | | | | | | | | library, allow output to be captured as a list of strings representing lines (in contrast to string streams which capture a single string). The output directive can output to a variable, and next can scan over a variable. * lib.c (span_str, compl_span_str, break_str): New functions. * lib.h (span_str, compl_span_str, break_str): New functions declared. * match.c (into_k, var_k): New keyword variables. (mf_file_data): New static function. (v_next): Refactored argument handling. Added support for :var keyword. (v_output): Added support for :into keyword. * stream.c (strlist_mark, strlist_out_put_string, strlist_out_put_char): New static functions. (strlist_out_ops): New static struct. (make_strlist_output_stream, get_list_from_stream): New functions. * stream.h (make_strlist_output_stream, get_list_from_stream): New functions declared.
* Whitespace.Kaz Kylheku2011-10-211-3/+3
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* * LICENSE, Makefile, configure, filter.c, filter.h, gc.c, gc.h, hash.c,Kaz Kylheku2011-10-041-1/+1
| | | | | | hash.h, lib.c, lib.h, match.c, match.h, parser.h, parser.l, parser.y, regex.c, regex.h, stream.c, stream.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h: Updated e-mail address.
* * LICENSE, Makefile, configure, gc.c, gc.h, hash.c, hash.h, lib.c,Kaz Kylheku2011-09-231-1/+1
| | | | | | lib.h, match.c, match.h, parser.h, parser.l, parser.y, regex.c, regex.h, stream.c, stream.h, txr.1, txr.c, txr.h, unwind.c, unwind.h, utf8.c, utf8.h: Updated copyright year.
* Bump copyrights to 2010.Kaz Kylheku2010-10-051-1/+1
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* Changing ``obj_t *'' occurences to a ``val'' typedef. (Ideally,Kaz Kylheku2009-11-201-17/+17
| | | | | we wouldn't have to declare object variables at all, so why use an obtuse syntax to do so?)
* Big round of changes to switch the code base to use the streamKaz Kylheku2009-11-161-6/+2
| | | | | | | | | | | | | | | | | abstraction instead of directly using C standard I/O, to eliminate most uses of C formatted I/O, and fix numerous bugs, such variadic argument lists which lack a terminating ``nao'' sentinel. Bug 28033 is addressed by this patch, since streams no longer provide printf-compatible formatting. The native formatter is extended with some additional capabilities to take over. The work on literal objects is expanded and they are now used throughout the code base. Fixed bad realloc in string output stream: reallocating by number of wide chars rather than bytes.
* Previous commit broke UTF-8 lexing, by changing the get_charKaz Kylheku2009-11-131-0/+2
| | | | | | | | semantics on the input stream to wide character input. Also, reading a query the command line (-c) must read bytes from a UTF-8 encoding of the string. We introduce a new get_byte function which can extract bytes from streams which provide it.
* Continuing wchar_t conversion. Making sure all stdio callsKaz Kylheku2009-11-121-3/+3
| | | | | use wide character functions so that there is no illicit mixing. (But the goal is to replace this usage with txr streams).
* Documenting extended characters in man page.Kaz Kylheku2009-11-121-1/+1
| | | | Cleaned up some more issues related to extended characters.
* Big conversion to wide characters and UTF-8 support.Kaz Kylheku2009-11-111-3/+3
| | | | | | | | | This is incomplete. There are too many dependencies on wide character support from the C stream I/O library, and implicit use of some encoding which may not be UTF-8. The regex code does not handle wide characters properly. Character type is still int in some places, rather than wchar_t. Test suite passes though.
* Throw exception on stream error during close, or I/O operations. ThisKaz Kylheku2009-11-061-3/+3
| | | | | | is needed for pipes that terminate abnormally or return failed termination. Pipe and stdio streams have an extra description field so they are printed in a readable way.
* txr-015 2009-10-15txr-015Kaz Kylheku2017-07-311-0/+48
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