Work on cg-base

Signed-off-by: Mattias Andrée <maandree@kth.se>

1 files changed, 85 insertions, 0 deletions

diff --git a/src/cg-base.h b/src/cg-base.h
new file mode 100644
index 0000000..74b5550
--- /dev/null
+++ b/src/cg-base.h
@@ -0,0 +1,85 @@
+/**
+ * cg-tools -- Cooperative gamma-enabled tools
+ * Copyright (C) 2016  Mattias Andrée (maandree@kth.se)
+ * 
+ * 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 3 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, see <http://www.gnu.org/licenses/>.
+ */
+#include <libcoopgamma.h>
+
+
+
+/**
+ * The process's name
+ */
+extern const char* argv0;
+
+/**
+ * The libcoopgamma context
+ */
+extern libcoopgamma_context_t cg;
+
+/**
+ * The names of the selected CRTC:s
+ */
+extern char** crtcs;
+
+/**
+ * CRTC and monitor information about
+ * each selected CRTC and connect monitor
+ */
+extern libcoopgamma_crtc_info_t* crtc_info;
+
+/**
+ * The number of selected CRTC:s
+ */
+extern size_t crtcs_n;
+
+
+/**
+ * Print usage information and exit
+ */
+#if defined(__GNUC__)
+__attribute__((__noreturn__))
+#endif
+extern void usage(void);
+
+/**
+ * Handle a command line option
+ * 
+ * @param   opt  The option, it is a NUL-terminate two-character
+ *               string starting with either '-' or '+', if the
+ *               argument is not recognised, call `usage`. This
+ *               string will not be "-m", "-s", or "-c".
+ * @param   arg  The argument associated with `opt`,
+ *               `NULL` there is no next argument, if this
+ *               parameter is `NULL` but needed, call `usage`
+ * @return       0 if `arg` was not used,
+ *               1 if `arg` was used,
+ *               -1 on error
+ */
+extern int handle_opt(char* opt, char* arg);
+
+/**
+ * This function is called after the last
+ * call to `handle_opt`
+ * 
+ * @param   argc    The number of unparsed arguments
+ * @param   argv    `NULL` terminated list of unparsed arguments
+ * @param   method  The argument associated with the "-m" option
+ * @param   site    The argument associated with the "-s" option
+ * @param   crtcs   The arguments associated with the "-c" options, `NULL`-terminated
+ * @return          Zero on success, -1 on error
+ */
+extern int handle_args(int argc, char* argv[], char* method, char* site, char** crtcs);
+