diff options
Diffstat (limited to 'libs/pbd/convert.cc')
| -rw-r--r-- | libs/pbd/convert.cc | 212 |
1 files changed, 212 insertions, 0 deletions
diff --git a/libs/pbd/convert.cc b/libs/pbd/convert.cc new file mode 100644 index 0000000000..60d39c91e2 --- /dev/null +++ b/libs/pbd/convert.cc @@ -0,0 +1,212 @@ +/* + Copyright (C) 2006 Paul Davis + + 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. + + You should have received a copy of the GNU General Public License + along with this program; if not, write to the Free Software + Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. + +*/ + +#include <cmath> +#include <stdint.h> + +#include "pbd/convert.h" + +#include "i18n.h" + +using std::string; +using std::vector; + +namespace PBD { + +string +short_version (string orig, string::size_type target_length) +{ + /* this tries to create a recognizable abbreviation + of "orig" by removing characters until we meet + a certain target length. + + note that we deliberately leave digits in the result + without modification. + */ + + + string::size_type pos; + + /* remove white-space and punctuation, starting at end */ + + while (orig.length() > target_length) { + if ((pos = orig.find_last_of (_("\"\n\t ,<.>/?:;'[{}]~`!@#$%^&*()_-+="))) == string::npos) { + break; + } + orig.replace (pos, 1, ""); + } + + /* remove lower-case vowels, starting at end */ + + while (orig.length() > target_length) { + if ((pos = orig.find_last_of (_("aeiou"))) == string::npos) { + break; + } + orig.replace (pos, 1, ""); + } + + /* remove upper-case vowels, starting at end */ + + while (orig.length() > target_length) { + if ((pos = orig.find_last_of (_("AEIOU"))) == string::npos) { + break; + } + orig.replace (pos, 1, ""); + } + + /* remove lower-case consonants, starting at end */ + + while (orig.length() > target_length) { + if ((pos = orig.find_last_of (_("bcdfghjklmnpqrtvwxyz"))) == string::npos) { + break; + } + orig.replace (pos, 1, ""); + } + + /* remove upper-case consonants, starting at end */ + + while (orig.length() > target_length) { + if ((pos = orig.find_last_of (_("BCDFGHJKLMNPQRTVWXYZ"))) == string::npos) { + break; + } + orig.replace (pos, 1, ""); + } + + /* whatever the length is now, use it */ + + return orig; +} + +int +atoi (const string& s) +{ + return std::atoi (s.c_str()); +} + +double +atof (const string& s) +{ + return std::atof (s.c_str()); +} + +vector<string> +internationalize (const char **array) +{ + vector<string> v; + + for (uint32_t i = 0; array[i]; ++i) { + v.push_back (_(array[i])); + } + + return v; +} + +static int32_t +int_from_hex (char hic, char loc) +{ + int hi; /* hi byte */ + int lo; /* low byte */ + + hi = (int) hic; + + if( ('0'<=hi) && (hi<='9') ) { + hi -= '0'; + } else if( ('a'<= hi) && (hi<= 'f') ) { + hi -= ('a'-10); + } else if( ('A'<=hi) && (hi<='F') ) { + hi -= ('A'-10); + } + + lo = (int) loc; + + if( ('0'<=lo) && (lo<='9') ) { + lo -= '0'; + } else if( ('a'<=lo) && (lo<='f') ) { + lo -= ('a'-10); + } else if( ('A'<=lo) && (lo<='F') ) { + lo -= ('A'-10); + } + + return lo + (16 * hi); +} + +void +url_decode (string& url) +{ + string::iterator last; + string::iterator next; + + for (string::iterator i = url.begin(); i != url.end(); ++i) { + if ((*i) == '+') { + *i = ' '; + } + } + + if (url.length() <= 3) { + return; + } + + last = url.end(); + + --last; /* points at last char */ + --last; /* points at last char - 1 */ + + for (string::iterator i = url.begin(); i != last; ) { + + if (*i == '%') { + + next = i; + + url.erase (i); + + i = next; + ++next; + + if (isxdigit (*i) && isxdigit (*next)) { + /* replace first digit with char */ + *i = int_from_hex (*i,*next); + ++i; /* points at 2nd of 2 digits */ + url.erase (i); + } + } else { + ++i; + } + } +} + +string +length2string (const int32_t frames, const float sample_rate) +{ + int secs = (int) (frames / sample_rate); + int hrs = secs / 3600; + secs -= (hrs * 3600); + int mins = secs / 60; + secs -= (mins * 60); + + int total_secs = (hrs * 3600) + (mins * 60) + secs; + int frames_remaining = (int) floor (frames - (total_secs * sample_rate)); + float fractional_secs = (float) frames_remaining / sample_rate; + + char duration_str[32]; + sprintf (duration_str, "%02d:%02d:%05.2f", hrs, mins, (float) secs + fractional_secs); + + return duration_str; +} + +} // namespace PBD |