/*
- lily-guile.cc -- implement assorted Guile bindings
+ This file is part of LilyPond, the GNU music typesetter.
- source file of the GNU LilyPond music typesetter
-
- (c) 1998--2007 Jan Nieuwenhuizen <janneke@gnu.org>
+ Copyright (C) 1998--2015 Jan Nieuwenhuizen <janneke@gnu.org>
Han-Wen Nienhuys <hanwen@xs4all.nl>
+
+ LilyPond 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 3 of the License, or
+ (at your option) any later version.
+
+ LilyPond 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.
+
+ You should have received a copy of the GNU General Public License
+ along with LilyPond. If not, see <http://www.gnu.org/licenses/>.
*/
#include "config.hh"
#include <cstdio>
+#include <ctype.h>
#include <cstring> /* memset */
+#include <glib.h>
using namespace std;
+#include "dimensions.hh"
+#include "file-name.hh"
+#include "file-path.hh"
#include "international.hh"
#include "libc-extension.hh"
#include "lily-guile.hh"
-#include "misc.hh"
-#include "warn.hh"
-#include "version.hh"
-#include "dimensions.hh"
#include "main.hh"
-#include "file-path.hh"
+#include "misc.hh"
+#include "program-option.hh"
#include "relocate.hh"
+#include "string-convert.hh"
+#include "version.hh"
+#include "warn.hh"
+
+/* Declaration of log function(s) */
+SCM ly_progress (SCM, SCM);
+
+LY_DEFINE (ly_start_environment, "ly:start-environment",
+ 0, 0, 0, (),
+ "Return the environment (a list of strings) that was in"
+ " effect at program start.")
+{
+ SCM l = SCM_EOL;
+ SCM *tail = &l;
+
+ for (vsize i = 0; i < start_environment_global.size (); i++)
+ {
+ *tail = scm_cons (ly_string2scm (start_environment_global[i]),
+ SCM_EOL);
+ tail = SCM_CDRLOC (*tail);
+ }
+
+ return l;
+}
LY_DEFINE (ly_find_file, "ly:find-file",
- 1, 0, 0, (SCM name),
- "Return the absolute file name of @var{name}, "
- "or @code{#f} if not found.")
+ 1, 0, 0, (SCM name),
+ "Return the absolute file name of @var{name},"
+ " or @code{#f} if not found.")
{
- SCM_ASSERT_TYPE (scm_is_string (name), name, SCM_ARG1, __FUNCTION__, "string");
+ LY_ASSERT_TYPE (scm_is_string, name, 1);
string nm = ly_scm2string (name);
string file_name = global_path.find (nm);
buffering.)
*/
LY_DEFINE (ly_gulp_file, "ly:gulp-file",
- 1, 1, 0, (SCM name, SCM size),
- "Read the file @var{name}, and return its contents in a string. "
- "The file is looked up using the search path. ")
+ 1, 1, 0, (SCM name, SCM size),
+ "Read @var{size} characters from the file @var{name},"
+ " and return its contents in a string."
+ " If @var{size} is undefined, the entire file is read."
+ " The file is looked up using the search path.")
{
- SCM_ASSERT_TYPE (scm_is_string (name), name, SCM_ARG1, __FUNCTION__, "string");
+ LY_ASSERT_TYPE (scm_is_string, name, 1);
int sz = INT_MAX;
- if (size != SCM_UNDEFINED)
+ if (!SCM_UNBNDP (size))
{
- SCM_ASSERT_TYPE (scm_is_number (size), size, SCM_ARG2, __FUNCTION__, "number");
+ LY_ASSERT_TYPE (scm_is_number, size, 2);
sz = scm_to_int (size);
}
-
+
string contents = gulp_file_to_string (ly_scm2string (name), true, sz);
- return scm_from_locale_stringn (contents.c_str (), contents.length ());
+ return scm_from_latin1_stringn (contents.c_str (), contents.length ());
}
-LY_DEFINE (ly_error, "ly:error",
- 1, 0, 1, (SCM str, SCM rest),
- "Scheme callable function to issue the error @code{msg}. "
- "The error is formatted with @code{format} and @code{rest}.")
+LY_DEFINE (ly_dir_p, "ly:dir?",
+ 1, 0, 0, (SCM s),
+ "Is @var{s} a direction? Valid directions are @w{@code{-1}},"
+ " @code{0}, or@tie{}@code{1}, where @w{@code{-1}} represents"
+ " left or down, @code{1}@tie{}represents right or up, and @code{0}"
+ " represents a neutral direction.")
{
- SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string");
- str = scm_simple_format (SCM_BOOL_F, str, rest);
- error (ly_scm2string (str));
- return SCM_UNSPECIFIED;
+ if (scm_is_integer (s))
+ {
+ int i = scm_to_int (s);
+ return (i >= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
+ }
+ return SCM_BOOL_F;
}
-LY_DEFINE (ly_message, "ly:message",
- 1, 0, 1, (SCM str, SCM rest),
- "Scheme callable function to issue the message @code{msg}. "
- "The message is formatted with @code{format} and @code{rest}.")
+LY_DEFINE (ly_assoc_get, "ly:assoc-get",
+ 2, 2, 0,
+ (SCM key, SCM alist, SCM default_value, SCM strict_checking),
+ "Return value if @var{key} in @var{alist}, else @var{default-value}"
+ " (or @code{#f} if not specified). If @var{strict-checking} is set"
+ " to @code{#t} and @var{key} is not in @var{alist}, a programming_error"
+ " is output.")
{
- SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string");
- str = scm_simple_format (SCM_BOOL_F, str, rest);
- message (ly_scm2string (str));
- return SCM_UNSPECIFIED;
-}
+ LY_ASSERT_TYPE (ly_cheap_is_list, alist, 2);
-LY_DEFINE (ly_progress, "ly:progress",
- 1, 0, 1, (SCM str, SCM rest),
- "Scheme callable function to print progress @code{str}. "
- "The message is formatted with @code{format} and @code{rest}.")
-{
- SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string");
- str = scm_simple_format (SCM_BOOL_F, str, rest);
- progress_indication (ly_scm2string (str));
- return SCM_UNSPECIFIED;
-}
+ SCM handle = scm_assoc (key, alist);
+ if (scm_is_pair (handle))
+ return scm_cdr (handle);
-LY_DEFINE (ly_programming_error, "ly:programming-error",
- 1, 0, 1, (SCM str, SCM rest),
- "Scheme callable function to issue the warning @code{msg}. "
- "The message is formatted with @code{format} and @code{rest}.")
-{
- SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string");
- str = scm_simple_format (SCM_BOOL_F, str, rest);
- programming_error (ly_scm2string (str));
- return SCM_UNSPECIFIED;
+ if (SCM_UNBNDP (default_value))
+ default_value = SCM_BOOL_F;
+
+ if (to_boolean (strict_checking))
+ {
+ string key_string = ly_scm2string
+ (scm_object_to_string (key, SCM_UNDEFINED));
+ string default_value_string = ly_scm2string
+ (scm_object_to_string (default_value,
+ SCM_UNDEFINED));
+ programming_error ("Cannot find key `"
+ + key_string
+ + "' in alist, setting to `"
+ + default_value_string + "'.");
+ }
+
+ return default_value;
}
-LY_DEFINE (ly_warning, "ly:warning",
- 1, 0, 1, (SCM str, SCM rest),
- "Scheme callable function to issue the warning @code{str}. "
- "The message is formatted with @code{format} and @code{rest}.")
+LY_DEFINE (ly_string_substitute, "ly:string-substitute",
+ 3, 0, 0, (SCM a, SCM b, SCM s),
+ "Replace string@tie{}@var{a} by string@tie{}@var{b} in"
+ " string@tie{}@var{s}.")
{
- SCM_ASSERT_TYPE (scm_is_string (str), str, SCM_ARG1, __FUNCTION__, "string");
- str = scm_simple_format (SCM_BOOL_F, str, rest);
- warning (ly_scm2string (str));
- return SCM_UNSPECIFIED;
+ LY_ASSERT_TYPE (scm_is_string, s, 1);
+ LY_ASSERT_TYPE (scm_is_string, b, 2);
+ LY_ASSERT_TYPE (scm_is_string, s, 3);
+
+ string ss = ly_scm2string (s);
+ replace_all (&ss, ly_scm2string (a),
+ ly_scm2string (b));
+
+ return ly_string2scm (ss);
}
-LY_DEFINE (ly_dir_p, "ly:dir?",
- 1, 0, 0, (SCM s),
- "type predicate. A direction is @code{-1}, @code{0} or "
- "@code{1}, where @code{-1} represents "
- "left or down and @code{1} represents right or up.")
+bool
+is_not_escape_character (Byte c)
{
- if (scm_is_number (s))
+ switch (c)
{
- int i = scm_to_int (s);
- return (i >= -1 && i <= 1) ? SCM_BOOL_T : SCM_BOOL_F;
+ case '-':
+ case '.':
+ case '/':
+ case '0'...'9':
+ case ':':
+ case 'A'...'Z':
+ case '_':
+ case 'a'...'z':
+ return true;
}
- return SCM_BOOL_F;
+
+ return false;
}
-LY_DEFINE (ly_assoc_get, "ly:assoc-get",
- 2, 1, 0,
- (SCM key, SCM alist, SCM default_value),
- "Return value if KEY in ALIST, else DEFAULT-VALUE "
- "(or #f if not specified).")
+LY_DEFINE (ly_string_percent_encode, "ly:string-percent-encode",
+ 1, 0, 0, (SCM str),
+ "Encode all characters in string @var{str} with hexadecimal"
+ " percent escape sequences, with the following exceptions:"
+ " characters @w{@code{-},} @code{.}, @code{/}, and @code{_}; and"
+ " characters in ranges @code{0-9}, @code{A-Z}, and @code{a-z}.")
{
- SCM handle = scm_assoc (key, alist);
- if (scm_is_pair (handle))
- return scm_cdr (handle);
-
- if (default_value == SCM_UNDEFINED)
- default_value = SCM_BOOL_F;
+ LY_ASSERT_TYPE (scm_is_string, str, 1);
- return default_value;
+ string orig_str = ly_scm2string (str);
+ string new_str = "";
+
+ vsize i = 0;
+ vsize n = orig_str.size ();
+
+ while (i < n)
+ {
+ Byte cur = orig_str[i];
+
+ if (is_not_escape_character (cur))
+ new_str += cur;
+ else
+ {
+ new_str += '%';
+ new_str += String_convert::bin2hex (cur);
+ }
+
+ i++;
+ }
+
+ return ly_string2scm (new_str);
}
-LY_DEFINE (ly_number2string, "ly:number->string",
- 1, 0, 0, (SCM s),
- "Convert @var{num} to a string without generating many decimals.")
+LY_DEFINE (ly_number_2_string, "ly:number->string",
+ 1, 0, 0, (SCM s),
+ "Convert @var{s} to a string without generating many decimals.")
{
- SCM_ASSERT_TYPE (scm_is_number (s), s, SCM_ARG1, __FUNCTION__, "number");
+ LY_ASSERT_TYPE (scm_is_number, s, 1);
- char str[400]; // ugh.
+ char str[400]; // ugh.
- if (scm_exact_p (s) == SCM_BOOL_F)
+ if (scm_is_false (scm_exact_p (s)))
{
Real r (scm_to_double (s));
- if (isinf (r) || isnan (r))
- {
- programming_error (_ ("infinity or NaN encountered while converting Real number"));
- programming_error (_ ("setting to zero"));
+ if (isinf (r) || isnan (r))
+ {
+ programming_error ("infinity or NaN encountered while converting Real number, "
+ "setting to zero");
- r = 0.0;
- }
+ r = 0.0;
+ }
- snprintf (str, sizeof (str), "%08.4f", r);
+ snprintf (str, sizeof (str), "%.4f", r);
}
else
snprintf (str, sizeof (str), "%d", int (scm_to_int (s)));
- return scm_from_locale_string (str);
+ return scm_from_ascii_string (str);
}
LY_DEFINE (ly_version, "ly:version", 0, 0, 0, (),
- "Return the current lilypond version as a list, e.g. @code{(1 3 127 uu1)}. ")
+ "Return the current lilypond version as a list, e.g.,"
+ " @code{(1 3 127 uu1)}.")
{
char const *vs = "\'(" MAJOR_VERSION " " MINOR_VERSION " " PATCH_LEVEL " " MY_PATCH_LEVEL ")";
}
LY_DEFINE (ly_unit, "ly:unit", 0, 0, 0, (),
- "Return the unit used for lengths as a string.")
+ "Return the unit used for lengths as a string.")
{
- return scm_from_locale_string (INTERNAL_UNIT);
+ return scm_from_ascii_string (INTERNAL_UNIT);
}
LY_DEFINE (ly_dimension_p, "ly:dimension?", 1, 0, 0, (SCM d),
- "Return @var{d} is a number. Used to distinguish length "
- "variables from normal numbers.")
+ "Return @var{d} as a number. Used to distinguish length"
+ " variables from normal numbers.")
{
return scm_number_p (d);
}
Debugging mem leaks:
*/
LY_DEFINE (ly_protects, "ly:protects",
- 0, 0, 0, (),
- "Return hash of protected objects.")
+ 0, 0, 0, (),
+ "Return hash of protected objects.")
{
+ //scm_protects is available only in Guile versions before 2.1.
+#if SCM_MAJOR_VERSION < 2 || SCM_MAJOR_VERSION == 2 && SCM_MINOR_VERSION < 1
return scm_protects;
+#else
+ return programming_error ("ly:protects is not supported in Guile 2.1");
+#endif
}
LY_DEFINE (ly_gettext, "ly:gettext",
- 1, 0, 0, (SCM string),
- "Gettext wrapper.")
-{
- SCM_ASSERT_TYPE (scm_is_string (string), string, SCM_ARG1,
- __FUNCTION__, "string");
- return ly_string2scm (_ (scm_i_string_chars (string)));
-}
-
-LY_DEFINE (ly_output_backend, "ly:output-backend",
- 0, 0, 0, (),
- "Return name of output backend.")
+ 1, 0, 0, (SCM original),
+ "A Scheme wrapper function for @code{gettext}.")
{
- return ly_string2scm (output_backend_global);
+ LY_ASSERT_TYPE (scm_is_string, original, 1);
+ return ly_string2scm (_ (ly_scm2string (original).c_str ()));
}
LY_DEFINE (ly_output_formats, "ly:output-formats",
- 0, 0, 0, (),
- "Formats passed to --format as a list of strings, "
- "used for the output.")
+ 0, 0, 0, (),
+ "Formats passed to @option{--format} as a list of strings,"
+ " used for the output.")
{
vector<string> output_formats = string_split (output_format_global, ',');
return lst;
}
-LY_DEFINE (ly_wchar_to_utf_8, "ly:wide-char->utf-8",
- 1, 0, 0, (SCM wc),
- "Encode the Unicode codepoint @var{wc}, an integer, as UTF-8")
+LY_DEFINE (ly_bigpdfs, "ly:bigpdfs",
+ 0, 0, 0, (),
+ "Return true if the command line includes the @option{--bigpdf} parameter."
+)
+{
+ return bigpdfs ? SCM_BOOL_T : SCM_BOOL_F;
+}
+
+LY_DEFINE (ly_wide_char_2_utf_8, "ly:wide-char->utf-8",
+ 1, 0, 0, (SCM wc),
+ "Encode the Unicode codepoint @var{wc}, an integer, as UTF-8.")
{
char buf[5];
- SCM_ASSERT_TYPE (scm_is_integer (wc), wc, SCM_ARG1, __FUNCTION__, "integer");
+ LY_ASSERT_TYPE (scm_is_integer, wc, 1);
unsigned wide_char = (unsigned) scm_to_int (wc);
char *p = buf;
}
*p = 0;
- return scm_from_locale_string (buf);
+ return scm_from_utf8_string (buf);
}
LY_DEFINE (ly_effective_prefix, "ly:effective-prefix",
- 0, 0, 0, (),
- "Return effective prefix.")
+ 0, 0, 0, (),
+ "Return effective prefix.")
{
- return ly_string2scm (prefix_directory);
+ return ly_string2scm (lilypond_datadir);
}
LY_DEFINE (ly_chain_assoc_get, "ly:chain-assoc-get",
- 2, 1, 0, (SCM key, SCM achain, SCM dfault),
- "Return value for @var{key} from a list of alists @var{achain}. "
- "If no if no entry is found, return DFAULT, "
- "or #f if no DFAULT not specified.")
+ 2, 2, 0, (SCM key, SCM achain, SCM default_value, SCM strict_checking),
+ "Return value for @var{key} from a list of alists @var{achain}."
+ " If no entry is found, return @var{default-value} or @code{#f} if"
+ " @var{default-value} is not specified. With @var{strict-checking}"
+ " set to @code{#t}, a programming_error is output in such cases.")
{
if (scm_is_pair (achain))
{
SCM handle = scm_assoc (key, scm_car (achain));
if (scm_is_pair (handle))
- return scm_cdr (handle);
+ return scm_cdr (handle);
else
- return ly_chain_assoc_get (key, scm_cdr (achain), dfault);
+ return ly_chain_assoc_get (key, scm_cdr (achain), default_value);
}
- return dfault == SCM_UNDEFINED ? SCM_BOOL_F : dfault;
+
+ if (to_boolean (strict_checking))
+ {
+ string key_string = ly_scm2string
+ (scm_object_to_string (key, SCM_UNDEFINED));
+ string default_value_string = ly_scm2string
+ (scm_object_to_string (default_value,
+ SCM_UNDEFINED));
+ programming_error ("Cannot find key `"
+ + key_string
+ + "' in achain, setting to `"
+ + default_value_string + "'.");
+ }
+
+ return SCM_UNBNDP (default_value) ? SCM_BOOL_F : default_value;
}
LY_DEFINE (ly_stderr_redirect, "ly:stderr-redirect",
- 1, 1, 0, (SCM file_name, SCM mode),
- "Redirect stderr to FILE-NAME, opened with MODE.")
+ 1, 1, 0, (SCM file_name, SCM mode),
+ "Redirect stderr to @var{file-name}, opened with @var{mode}.")
{
- SCM_ASSERT_TYPE (scm_is_string (file_name), file_name, SCM_ARG1,
- __FUNCTION__, "file_name");
- char const *m = "w";
- if (mode != SCM_UNDEFINED && scm_string_p (mode))
- m = ly_scm2newstr (mode, 0);
+ LY_ASSERT_TYPE (scm_is_string, file_name, 1);
+
+ string m = "w";
+ string f = ly_scm2string (file_name);
+ FILE *stderrfile;
+ if (scm_is_string (mode))
+ m = ly_scm2string (mode);
/* dup2 and (fileno (current-error-port)) do not work with mingw'c
gcc -mwindows. */
- fflush (stderr);
- freopen (ly_scm2newstr (file_name, 0), m, stderr);
+ fflush (stderr);
+ stderrfile = freopen (f.c_str (), m.c_str (), stderr);
+ if (!stderrfile)
+ error (_f ("failed redirecting stderr to `%s'", f.c_str ()));
return SCM_UNSPECIFIED;
}
static SCM
-accumulate_symbol (void *closure, SCM key, SCM val, SCM result)
+accumulate_symbol (void * /* closure */,
+ SCM key,
+ SCM /* val */,
+ SCM result)
{
- (void) closure;
- (void) val;
return scm_cons (key, result);
}
-LY_DEFINE(ly_hash_table_keys, "ly:hash-table-keys",
- 1,0,0, (SCM tab),
- "return a list of keys in @var{tab}")
+LY_DEFINE (ly_hash_table_keys, "ly:hash-table-keys",
+ 1, 0, 0, (SCM tab),
+ "Return a list of keys in @var{tab}.")
{
- return scm_internal_hash_fold ((Hash_closure_function) & accumulate_symbol,
- NULL, SCM_EOL, tab);
+ return scm_internal_hash_fold ((scm_t_hash_fold_fn) &accumulate_symbol,
+ NULL, SCM_EOL, tab);
}
-LY_DEFINE (ly_camel_case_to_lisp_identifier, "ly:camel-case->lisp-identifier",
- 1, 0, 0, (SCM name_sym),
- "Convert FooBar_Bla to foo-bar-bla style symbol.")
+LY_DEFINE (ly_camel_case_2_lisp_identifier, "ly:camel-case->lisp-identifier",
+ 1, 0, 0, (SCM name_sym),
+ "Convert @code{FooBar_Bla} to @code{foo-bar-bla} style symbol.")
{
- SCM_ASSERT_TYPE(scm_is_symbol (name_sym), name_sym,
- SCM_ARG1, __FUNCTION__, "symbol");
-
+ LY_ASSERT_TYPE (ly_is_symbol, name_sym, 1);
+
/*
TODO: should use strings instead?
*/
-
+
const string in = ly_symbol2string (name_sym);
string result = camel_case_to_lisp_identifier (in);
}
LY_DEFINE (ly_expand_environment, "ly:expand-environment",
- 1, 0, 0, (SCM str),
- "Expand $VAR and $@{VAR@} in @var{str}.")
+ 1, 0, 0, (SCM str),
+ "Expand @code{$VAR} and @code{$@{VAR@}} in @var{str}.")
{
- SCM_ASSERT_TYPE(scm_is_string (str), str,
- SCM_ARG1, __FUNCTION__, "string");
+ LY_ASSERT_TYPE (scm_is_string, str, 1);
return ly_string2scm (expand_environment_variables (ly_scm2string (str)));
}
-
LY_DEFINE (ly_truncate_list_x, "ly:truncate-list!",
- 2, 0, 0, (SCM lst, SCM i),
- "Take at most the first @var{i} of list @var{lst}")
+ 2, 0, 0, (SCM lst, SCM i),
+ "Take at most the first @var{i} of list @var{lst}.")
{
- SCM_ASSERT_TYPE(scm_is_integer (i), i,
- SCM_ARG1, __FUNCTION__, "integer");
+ LY_ASSERT_TYPE (scm_is_integer, i, 1);
int k = scm_to_int (i);
if (k == 0)
SCM s = lst;
k--;
for (; scm_is_pair (s) && k--; s = scm_cdr (s))
- ;
+ ;
if (scm_is_pair (s))
- scm_set_cdr_x (s, SCM_EOL);
+ scm_set_cdr_x (s, SCM_EOL);
}
return lst;
}
+string
+format_single_argument (SCM arg, int precision, bool escape = false)
+{
+ if (scm_is_integer (arg) && scm_is_true (scm_exact_p (arg)))
+ return (String_convert::int_string (scm_to_int (arg)));
+ else if (scm_is_number (arg))
+ {
+ Real val = scm_to_double (arg);
+
+ if (isnan (val) || isinf (val))
+ {
+ warning (_ ("Found infinity or nan in output. Substituting 0.0"));
+ return ("0.0");
+ if (strict_infinity_checking)
+ abort ();
+ }
+ else
+ return (String_convert::form_string ("%.*lf", precision, val));
+ }
+ else if (scm_is_string (arg))
+ {
+ string s = ly_scm2string (arg);
+ if (escape)
+ {
+ // Escape backslashes and double quotes, wrap it in double quotes
+ replace_all (&s, "\\", "\\\\");
+ replace_all (&s, "\"", "\\\"");
+ // don't replace percents, since the png backend uses %d as escape sequence
+ // replace_all (&s, "%", "\\%");
+ replace_all (&s, "$", "\\$");
+ s = "\"" + s + "\"";
+ }
+ return s;
+ }
+ else if (scm_is_symbol (arg))
+ return (ly_symbol2string (arg));
+ else
+ {
+ ly_progress (scm_from_ascii_string ("\nUnsupported SCM value for format: ~a"),
+ scm_list_1 (arg));
+ }
+
+ return "";
+}
+
+LY_DEFINE (ly_format, "ly:format",
+ 1, 0, 1, (SCM str, SCM rest),
+ "LilyPond specific format, supporting @code{~a} and @code{~[0-9]f}."
+ " Basic support for @code{~s} is also provided.")
+{
+ LY_ASSERT_TYPE (scm_is_string, str, 1);
+
+ string format = ly_scm2string (str);
+ vector<string> results;
+
+ vsize i = 0;
+ while (i < format.size ())
+ {
+ vsize tilde = format.find ('~', i);
+
+ results.push_back (format.substr (i, (tilde - i)));
+
+ if (tilde == NPOS)
+ break;
+
+ tilde++;
+
+ char spec = format.at (tilde++);
+ if (spec == '~')
+ results.push_back ("~");
+ else
+ {
+ if (!scm_is_pair (rest))
+ {
+ programming_error (string (__FUNCTION__)
+ + ": not enough arguments for format.");
+ return ly_string2scm ("");
+ }
+
+ SCM arg = scm_car (rest);
+ rest = scm_cdr (rest);
+
+ int precision = 8;
+
+ if (spec == '$')
+ precision = 2;
+ else if (isdigit (spec))
+ {
+ precision = spec - '0';
+ spec = format.at (tilde++);
+ }
+
+ if (spec == 'a' || spec == 'A' || spec == 'f' || spec == '$')
+ results.push_back (format_single_argument (arg, precision));
+ else if (spec == 's' || spec == 'S')
+ results.push_back (format_single_argument (arg, precision, true));
+ else if (spec == 'l')
+ {
+ SCM s = arg;
+ for (; scm_is_pair (s); s = scm_cdr (s))
+ {
+ results.push_back (format_single_argument (scm_car (s), precision));
+ if (!scm_is_null (scm_cdr (s)))
+ results.push_back (" ");
+ }
+
+ if (!scm_is_null (s))
+ results.push_back (format_single_argument (s, precision));
+
+ }
+ }
+
+ i = tilde;
+ }
+
+ if (scm_is_pair (rest))
+ programming_error (string (__FUNCTION__)
+ + ": too many arguments");
+
+ vsize len = 0;
+ for (vsize i = 0; i < results.size (); i++)
+ len += results[i].size ();
+
+ char *result = (char *) scm_malloc (len + 1);
+ char *ptr = result;
+ for (vsize i = 0; i < results.size (); i++)
+ {
+ // strcpy and strncpy cannot be used here
+ // because std::string may contain '\0' in its contents.
+ results[i].copy (ptr, results[i].size ());
+ ptr += results[i].size ();
+ }
+ *ptr = '\0';
+
+ return scm_take_locale_stringn (result, len);
+}
+
+int
+ly_run_command (char *argv[], char **standard_output, char **standard_error)
+{
+ GError *error = 0;
+ int exit_status = 0;
+ int flags = G_SPAWN_SEARCH_PATH;
+ if (!standard_output)
+ flags |= G_SPAWN_STDOUT_TO_DEV_NULL;
+ if (!standard_error)
+ flags |= G_SPAWN_STDERR_TO_DEV_NULL;
+ if (!g_spawn_sync (0, argv, 0, GSpawnFlags (flags),
+ 0, 0,
+ standard_output, standard_error,
+ &exit_status, &error))
+ {
+ warning (_f ("g_spawn_sync failed (%d): %s: %s",
+ exit_status, argv[0], error->message));
+ g_error_free (error);
+ if (!exit_status)
+ exit_status = -1;
+ }
+
+ return exit_status;
+}
+
+static char *
+ly_scm2utf8 (SCM str)
+{
+ char *p = ly_scm2str0 (str);
+ char *g = g_locale_to_utf8 (p, -1, 0, 0, 0);
+ free (p);
+ return g;
+}
+
+LY_DEFINE (ly_spawn, "ly:spawn",
+ 1, 0, 1, (SCM command, SCM rest),
+ "Simple interface to g_spawn_sync"
+ " @var{str}."
+ " The error is formatted with @code{format} and @var{rest}.")
+
+{
+ LY_ASSERT_TYPE (scm_is_string, command, 1);
+
+ int argc = scm_is_pair (rest) ? scm_ilength (rest) : 0;
+ char **argv = new char*[argc + 2];
+
+ int n = 0;
+ argv[n++] = ly_scm2utf8 (command);
+ for (SCM s = rest; scm_is_pair (s); s = scm_cdr (s))
+ argv[n++] = ly_scm2utf8 (scm_car (s));
+ argv[n] = 0;
+
+ char *standard_output = 0;
+ char *standard_error = 0;
+ // Always get the pointer to the stdout/stderr messages
+ int exit_status = ly_run_command (argv, &standard_output, &standard_error);
+
+ if (standard_output && standard_error)
+ {
+ // Print out stdout and stderr only in debug mode
+ debug_output (string ("\n") + standard_output + standard_error, true);
+ }
+
+ g_free (standard_error);
+ g_free (standard_output);
+
+ for (int i = 0; i < n; i++)
+ free (argv[i]);
+ delete[] argv;
+
+ return scm_from_int (exit_status);
+}
projects / lilypond.git / blobdiff