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Diffstat (limited to 'debian/htdig/htdig-3.2.0b6/htlib/ParsedString.cc')
| -rw-r--r-- | debian/htdig/htdig-3.2.0b6/htlib/ParsedString.cc | 202 |
1 files changed, 202 insertions, 0 deletions
diff --git a/debian/htdig/htdig-3.2.0b6/htlib/ParsedString.cc b/debian/htdig/htdig-3.2.0b6/htlib/ParsedString.cc new file mode 100644 index 00000000..3a774fb6 --- /dev/null +++ b/debian/htdig/htdig-3.2.0b6/htlib/ParsedString.cc @@ -0,0 +1,202 @@ +// +// ParsedString.cc +// +// ParsedString: Contains a string. The string my contain $var, ${var}, $(var) +// `filename`. The get method will expand those using the +// dictionary given in argument. +// +// Part of the ht://Dig package <http://www.htdig.org/> +// Copyright (c) 1999-2004 The ht://Dig Group +// For copyright details, see the file COPYING in your distribution +// or the GNU Library General Public License (LGPL) version 2 or later +// <http://www.gnu.org/copyleft/lgpl.html> +// +// $Id: ParsedString.cc,v 1.9 2004/05/28 13:15:21 lha Exp $ +// + +#ifdef HAVE_CONFIG_H +#include "htconfig.h" +#endif /* HAVE_CONFIG_H */ + +#include "ParsedString.h" + +#include <ctype.h> +#include <stdio.h> + + +//***************************************************************************** +// ParsedString::ParsedString() +// +ParsedString::ParsedString() +{ +} + + +//***************************************************************************** +// +ParsedString::ParsedString(const String& s) +{ + value = s; +} + + +//***************************************************************************** +// ParsedString::~ParsedString() +// +ParsedString::~ParsedString() +{ +} + + +//***************************************************************************** +// +void +ParsedString::set(const String& str) +{ + value = str; +} + + +//***************************************************************************** +// Return a fully parsed string. +// +// Allowed syntax: +// $var +// ${var} +// $(var) +// `filename` +// +// The filename can also contain variables +// +const String +ParsedString::get(const Dictionary &dict) const +{ + String variable; + String parsed; + ParsedString *temp; + const char *str = value.get(); + char delim = ' '; + int need_delim = 0; + + while (*str) + { + if (*str == '$') + { + // + // A dollar sign starts a variable. + // + str++; + need_delim = 1; + if (*str == '{') + delim = '}'; + else if (*str == '(') + delim = ')'; + else + need_delim = 0; + if (need_delim) + str++; + variable.trunc(); + while (isalnum(*str) || *str == '_' || *str == '-') + { + variable << *str++; + } + if (*str) + { + if (need_delim && *str == delim) + { + // + // Found end of variable + // + temp = (ParsedString *) dict[variable]; + if (temp) + parsed << temp->get(dict); + str++; + } + else if (need_delim) + { + // + // Error. Probably an illegal value in the name We'll + // assume the variable ended here. + // + temp = (ParsedString *) dict[variable]; + if (temp) + parsed << temp->get(dict); + } + else + { + // + // This variable didn't have a delimiter. + // + temp = (ParsedString *) dict[variable]; + if (temp) + parsed << temp->get(dict); + } + } + else + { + // + // End of string reached. We'll assume that this is also + // the end of the variable + // + temp = (ParsedString *) dict[variable]; + if (temp) + parsed << temp->get(dict); + } + } + else if (*str == '`') + { + // + // Back-quote delimits a filename which we need to insert + // + str++; + variable.trunc(); + while (*str && *str != '`') + { + variable << *str++; + } + if (*str == '`') + str++; + ParsedString filename(variable); + variable.trunc(); + getFileContents(variable, filename.get(dict)); + parsed << variable; + } + else if (*str == '\\') + { + // + // Backslash escapes the next character + // + str++; + if (*str) + parsed << *str++; + } + else + { + // + // Normal character + // + parsed << *str++; + } + } + return parsed; +} + + +void +ParsedString::getFileContents(String &str, const String& filename) const +{ + FILE *fl = fopen(filename, "r"); + char buffer[1000]; + + if (!fl) + return; + while (fgets(buffer, sizeof(buffer), fl)) + { + String s(buffer); + s.chop("\r\n\t "); + str << s << ' '; + } + str.chop(1); + fclose(fl); +} + |