diff options
Diffstat (limited to 'web/lib/pkgbuild-parser.inc.php')
| -rw-r--r-- | web/lib/pkgbuild-parser.inc.php | 139 |
1 files changed, 139 insertions, 0 deletions
diff --git a/web/lib/pkgbuild-parser.inc.php b/web/lib/pkgbuild-parser.inc.php new file mode 100644 index 0000000..0bd4cfe --- /dev/null +++ b/web/lib/pkgbuild-parser.inc.php @@ -0,0 +1,139 @@ +# <?php +if (!$error) { + # process PKGBUILD - remove line concatenation + # + $pkgbuild = array(); + $line_no = 0; + $lines = array(); + $continuation_line = 0; + $current_line = ""; + $paren_depth = 0; + foreach (explode("\n", $pkgbuild_raw) as $line) { + $line = trim($line); + # Remove comments + $line = preg_replace('/\s*#.*/', '', $line); + + $char_counts = count_chars($line, 0); + $paren_depth += $char_counts[ord('(')] - $char_counts[ord(')')]; + if (substr($line, strlen($line)-1) == "\\") { + # continue appending onto existing line_no + # + $current_line .= substr($line, 0, strlen($line)-1); + $continuation_line = 1; + } elseif ($paren_depth > 0) { + # assumed continuation + # continue appending onto existing line_no + # + $current_line .= $line . " "; + $continuation_line = 1; + } else { + # maybe the last line in a continuation, or a standalone line? + # + if ($continuation_line) { + # append onto existing line_no + # + $current_line .= $line; + $lines[$line_no] = $current_line; + $current_line = ""; + } else { + # it's own line_no + # + $lines[$line_no] = $line; + } + $continuation_line = 0; + $line_no++; + } + } + + # Now process the lines and put any var=val lines into the + # 'pkgbuild' array. + while (list($k, $line) = each($lines)) { + # Neutralize parameter substitution + $line = preg_replace('/\${(\w+)#(\w*)}?/', '$1$2', $line); + + $lparts = Array(); + # Match variable assignment only. + if (preg_match('/^\s*[_\w]+=[^=].*/', $line, $matches)) { + $lparts = explode("=", $matches[0], 2); + } + + if (!empty($lparts)) { + # this is a variable/value pair, strip + # out array parens and any quoting, + # except in pkgdesc for pkgname or + # pkgdesc, only remove start/end pairs + # of " or ' + if ($lparts[0] == "pkgname" || $lparts[0] == "pkgdesc") { + if ($lparts[1]{0} == '"' && + $lparts[1]{strlen($lparts[1])-1} == '"') { + $pkgbuild[$lparts[0]] = substr($lparts[1], 1, -1); + } + elseif + ($lparts[1]{0} == "'" && + $lparts[1]{strlen($lparts[1])-1} == "'") { + $pkgbuild[$lparts[0]] = substr($lparts[1], 1, -1); + } else { + $pkgbuild[$lparts[0]] = $lparts[1]; + } + } else { + $pkgbuild[$lparts[0]] = str_replace(array("(",")","\"","'"), "", + $lparts[1]); + } + } + } + + # some error checking on PKGBUILD contents - just make sure each + # variable has a value. This does not do any validity checking + # on the values, or attempts to fix line continuation/wrapping. + $req_vars = array("url", "pkgdesc", "license", "pkgrel", "pkgver", "arch", "pkgname"); + foreach ($req_vars as $var) { + if (!array_key_exists($var, $pkgbuild)) { + $error = __('Missing %s variable in PKGBUILD.', $var); + break; + } + } +} + +# Now, run through the pkgbuild array, and do "eval" and simple substituions. +$new_pkgbuild = array(); +if (!$error) { + while (list($k, $v) = each($pkgbuild)) { + if (strpos($k,'eval ') !== false) { + $k = preg_replace('/^eval[\s]*/', "", $k); + ##"eval" replacements + $pattern_eval = '/{\$({?)([\w]+)(}?)}/'; + while (preg_match($pattern_eval,$v,$regs)) { + $pieces = explode(",",$pkgbuild["$regs[2]"]); + ## nongreedy matching! - preserving the order of "eval" + $pattern = '/([\S]*?){\$'.$regs[1].$regs[2].$regs[3].'}([\S]*)/'; + while (preg_match($pattern,$v,$regs_replace)) { + $replacement = ""; + for ($i = 0; $i < sizeof($pieces); $i++) { + $replacement .= $regs_replace[1].$pieces[$i].$regs_replace[2]." "; + } + $v=preg_replace($pattern, $replacement, $v, 1); + } + } + } + + # Simple variable replacement + $pattern_var = '/\$({?)([_\w]+)(}?)/'; + $offset = 0; + while (preg_match($pattern_var, $v, $regs, PREG_OFFSET_CAPTURE, $offset)) { + $var = $regs[2][0]; + $pos = $regs[0][1]; + $len = strlen($regs[0][0]); + + if (isset($new_pkgbuild[$var])) { + $replacement = substr($new_pkgbuild[$var], strpos($new_pkgbuild[$var], " ")); + } + else { + $replacement = ''; + } + + $v = substr_replace($v, $replacement, $pos, $len); + $offset = $pos + strlen($replacement); + } + $new_pkgbuild[$k] = $v; + } +} |