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-rw-r--r--apt-private/private-utils.cc98
1 files changed, 98 insertions, 0 deletions
diff --git a/apt-private/private-utils.cc b/apt-private/private-utils.cc
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+#include <config.h>
+
+#include <apt-pkg/configuration.h>
+#include <apt-pkg/error.h>
+#include <apt-pkg/fileutl.h>
+
+#include <apt-private/private-utils.h>
+
+#include <cstdlib>
+#include <sstream>
+#include <unistd.h>
+
+// DisplayFileInPager - Display File with pager /*{{{*/
+bool DisplayFileInPager(std::string const &filename)
+{
+ pid_t Process = ExecFork();
+ if (Process == 0)
+ {
+ const char *Args[3];
+ Args[1] = filename.c_str();
+ Args[2] = NULL;
+ if (isatty(STDOUT_FILENO) == 1)
+ {
+ // likely installed, provided by sensible-utils
+ std::string const pager = _config->Find("Dir::Bin::Pager",
+ "sensible-pager");
+ Args[0] = pager.c_str();
+ execvp(Args[0],(char **)Args);
+ // lets try some obvious alternatives
+ Args[0] = getenv("PAGER");
+ if (Args[0] != NULL)
+ execvp(Args[0],(char **)Args);
+
+ Args[0] = "pager";
+ execvp(Args[0],(char **)Args);
+ }
+ // we could read the file ourselves, but… meh
+ Args[0] = "cat";
+ execvp(Args[0],(char **)Args);
+ exit(100);
+ }
+
+ // Wait for the subprocess
+ return ExecWait(Process, "pager", false);
+}
+ /*}}}*/
+// EditFileInSensibleEditor - Edit File with editor /*{{{*/
+bool EditFileInSensibleEditor(std::string const &filename)
+{
+ pid_t Process = ExecFork();
+ if (Process == 0)
+ {
+ // likely installed, provided by sensible-utils
+ std::string const editor = _config->Find("Dir::Bin::Editor",
+ "sensible-editor");
+ const char *Args[3];
+ Args[0] = editor.c_str();
+ Args[1] = filename.c_str();
+ Args[2] = NULL;
+ execvp(Args[0],(char **)Args);
+ // the usual suspects we can try as an alternative
+ Args[0] = getenv("VISUAL");
+ if (Args[0] != NULL)
+ execvp(Args[0],(char **)Args);
+
+ Args[0] = getenv("EDITOR");
+ if (Args[0] != NULL)
+ execvp(Args[0],(char **)Args);
+
+ Args[0] = "editor";
+ execvp(Args[0],(char **)Args);
+ exit(100);
+ }
+
+ // Wait for the subprocess
+ return ExecWait(Process, "editor", false);
+}
+ /*}}}*/
+time_t GetSecondsSinceEpoch() /*{{{*/
+{
+ auto const source_date_epoch = getenv("SOURCE_DATE_EPOCH");
+ if (source_date_epoch == nullptr)
+ return time(nullptr);
+
+ time_t epoch;
+ std::stringstream ss(source_date_epoch);
+ ss >> epoch;
+
+ if (ss.fail() || !ss.eof())
+ {
+ _error->Warning("Environment variable SOURCE_DATE_EPOCH was ignored as it has an invalid value: \"%s\"",
+ source_date_epoch);
+ return time(nullptr);
+ }
+
+ return epoch;
+}
+ /*}}}*/