Move all parsing functions from the wayland backend and put
them into the weston code and add versionning to configuration
structure.

Signed-off-by: Benoit Gschwind <gschw...@gnu-log.net>
---
 src/compositor-wayland.c | 232 ++++-------------------------------------------
 src/compositor-wayland.h |   5 +
 src/main.c               | 211 +++++++++++++++++++++++++++++++++++++++++-
 3 files changed, 232 insertions(+), 216 deletions(-)

diff --git a/src/compositor-wayland.c b/src/compositor-wayland.c
index 142cb3a..6083bf3 100644
--- a/src/compositor-wayland.c
+++ b/src/compositor-wayland.c
@@ -51,8 +51,6 @@
 #include "presentation-time-server-protocol.h"
 #include "linux-dmabuf.h"
 
-#define WINDOW_TITLE "Weston Compositor"
-
 struct wayland_backend {
        struct weston_backend base;
        struct weston_compositor *compositor;
@@ -1091,59 +1089,6 @@ err_name:
        return NULL;
 }
 
-static void
-wayland_output_init_from_config(struct weston_wayland_backend_output_config 
*output,
-                               struct weston_config_section *config_section,
-                               int option_width, int option_height,
-                               int option_scale)
-{
-       char *mode, *t, *str;
-       unsigned int slen;
-
-       weston_config_section_get_string(config_section, "name", &output->name,
-                                        NULL);
-       if (output->name) {
-               slen = strlen(output->name);
-               slen += strlen(WINDOW_TITLE " - ");
-               str = malloc(slen + 1);
-               if (str)
-                       snprintf(str, slen + 1, WINDOW_TITLE " - %s",
-                                output->name);
-               free(output->name);
-               output->name = str;
-       }
-       if (!output->name)
-               output->name = strdup(WINDOW_TITLE);
-
-       weston_config_section_get_string(config_section,
-                                        "mode", &mode, "1024x600");
-       if (sscanf(mode, "%dx%d", &output->width, &output->height) != 2) {
-               weston_log("Invalid mode \"%s\" for output %s\n",
-                          mode, output->name);
-               output->width = 1024;
-               output->height = 640;
-       }
-       free(mode);
-
-       if (option_width)
-               output->width = option_width;
-       if (option_height)
-               output->height = option_height;
-
-       weston_config_section_get_int(config_section, "scale", &output->scale, 
1);
-
-       if (option_scale)
-               output->scale = option_scale;
-
-       weston_config_section_get_string(config_section,
-                                        "transform", &t, "normal");
-       if (weston_parse_transform(t, &output->transform) < 0)
-               weston_log("Invalid transform \"%s\" for output %s\n",
-                          t, output->name);
-       free(t);
-
-}
-
 static struct wayland_output *
 wayland_output_create_for_config(struct wayland_backend *b,
                                 struct weston_wayland_backend_output_config 
*oc,
@@ -2326,176 +2271,37 @@ wayland_backend_destroy(struct wayland_backend *b)
 }
 
 static void
-wayland_backend_config_release(struct weston_wayland_backend_config 
*new_config) {
-       int i;
-       for (i = 0; i < new_config->num_outputs; ++i) {
-               free(new_config->outputs[i].name);
-       }
-       free(new_config->cursor_theme);
-       free(new_config->display_name);
-       free(new_config->outputs);
-}
-
-/*
- * Append a new output struct at the end of new_config.outputs and return a
- * pointer to the newly allocated structure or NULL if fail. The allocated
- * structure is NOT cleared nor set to default values.
- */
-static struct weston_wayland_backend_output_config *
-wayland_backend_config_add_new_output(struct weston_wayland_backend_config 
*new_config) {
-       struct weston_wayland_backend_output_config *outputs;
-       outputs = realloc(new_config->outputs,
-                         (new_config->num_outputs+1)*sizeof(struct 
weston_wayland_backend_output_config));
-       if (!outputs)
-               return NULL;
-       new_config->num_outputs += 1;
-       new_config->outputs = outputs;
-       return &(new_config->outputs[new_config->num_outputs-1]);
-}
-
-static int
-load_wayland_backend_config(struct weston_compositor *compositor, int *argc, 
char *argv[],
-            struct weston_config *config,
-            struct weston_wayland_backend_config *out_config)
-{
-       struct weston_wayland_backend_config new_config = { 0, };
-       struct weston_config_section *section;
-       struct weston_wayland_backend_output_config *oc;
-       int count, width, height, scale;
-       const char *section_name;
-       char *name;
-
-       const struct weston_option wayland_options[] = {
-               { WESTON_OPTION_INTEGER, "width", 0, &width },
-               { WESTON_OPTION_INTEGER, "height", 0, &height },
-               { WESTON_OPTION_INTEGER, "scale", 0, &scale },
-               { WESTON_OPTION_STRING, "display", 0, &new_config.display_name 
},
-               { WESTON_OPTION_BOOLEAN, "use-pixman", 0, 
&new_config.use_pixman },
-               { WESTON_OPTION_INTEGER, "output-count", 0, &count },
-               { WESTON_OPTION_BOOLEAN, "fullscreen", 0, 
&new_config.fullscreen },
-               { WESTON_OPTION_BOOLEAN, "sprawl", 0, &new_config.sprawl },
-       };
-
-       width = 0;
-       height = 0;
-       scale = 0;
-       new_config.display_name = NULL;
-       new_config.use_pixman = 0;
-       count = 1;
-       new_config.fullscreen = 0;
-       new_config.sprawl = 0;
-       parse_options(wayland_options,
-                     ARRAY_LENGTH(wayland_options), argc, argv);
-
-       new_config.cursor_size = 32;
-       new_config.cursor_theme = NULL;
-
-       section = weston_config_get_section(config, "shell", NULL, NULL);
-       weston_config_section_get_string(section, "cursor-theme",
-                                        &new_config.cursor_theme, NULL);
-       weston_config_section_get_int(section, "cursor-size",
-                                     &new_config.cursor_size, 32);
-
-       if (new_config.sprawl) {
-               /* do nothing, everything is already set */
-               *out_config = new_config;
-               return 0;
-       }
-
-       if (new_config.fullscreen) {
-
-               oc = wayland_backend_config_add_new_output(&new_config);
-
-               if (!oc)
-                       goto err_outputs;
-
-               oc->width = width;
-               oc->height = height;
-               oc->name = NULL;
-               oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
-               oc->scale = 1;
-
-               *out_config = new_config;
-               return 0;
-       }
-
-       section = NULL;
-       while (weston_config_next_section(config, &section, &section_name)) {
-               if (!section_name || strcmp(section_name, "output") != 0)
-                       continue;
-               weston_config_section_get_string(section, "name", &name, NULL);
-               if (name == NULL)
-                       continue;
-
-               if (name[0] != 'W' || name[1] != 'L') {
-                       free(name);
-                       continue;
-               }
-               free(name);
-
-               oc = wayland_backend_config_add_new_output(&new_config);
-
-               if (!oc)
-                       goto err_outputs;
-
-               wayland_output_init_from_config(oc, section, width,
-                                               height, scale);
-               --count;
-       }
-
-       if (!width)
-               width = 1024;
-       if (!height)
-               height = 640;
-       if (!scale)
-               scale = 1;
-       while (count > 0) {
-
-               oc = wayland_backend_config_add_new_output(&new_config);
-
-               if (!oc)
-                       goto err_outputs;
-
-               oc->width = width;
-               oc->height = height;
-               oc->name = NULL;
-               oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
-               oc->scale = scale;
-
-               --count;
-       }
-
-       *out_config = new_config;
-       return 0;
-
-err_outputs:
-       wayland_backend_config_release(&new_config);
-       return -1;
+config_init_to_defaults(struct weston_wayland_backend_config *config)
+{
 }
 
 WL_EXPORT int
 backend_init(struct weston_compositor *compositor, int *argc, char *argv[],
-            struct weston_config *config,
+            struct weston_config *wc,
             struct weston_backend_config *config_base)
 {
        struct wayland_backend *b;
        struct wayland_output *output;
        struct wayland_parent_output *poutput;
-       struct weston_wayland_backend_config new_config;
+       struct weston_wayland_backend_config config = {{ 0, }};
        int x, count;
 
-       if(load_wayland_backend_config(compositor, argc, argv, config,
-                                   &new_config) < 0) {
-               wayland_backend_config_release(&new_config);
+       if (config_base == NULL ||
+           config_base->struct_version != 
WESTON_WAYLAND_BACKEND_CONFIG_VERSION ||
+           config_base->struct_size > sizeof(struct 
weston_wayland_backend_config)) {
+               weston_log("wayland backend config structure is invalid\n");
                return -1;
        }
 
-       b = wayland_backend_create(compositor, &new_config, argc, argv, config);
+       config_init_to_defaults(&config);
+       memcpy(&config, config_base, config_base->struct_size);
+
+       b = wayland_backend_create(compositor, &config, argc, argv, wc);
 
        if (!b)
                return -1;
 
-       if (new_config.sprawl || b->parent.fshell) {
+       if (config.sprawl || b->parent.fshell) {
                b->sprawl_across_outputs = 1;
                wl_display_roundtrip(b->parent.wl_display);
 
@@ -2505,12 +2311,12 @@ backend_init(struct weston_compositor *compositor, int 
*argc, char *argv[],
                return 0;
        }
 
-       if (new_config.fullscreen) {
-               if (new_config.num_outputs != 1 || !new_config.outputs)
+       if (config.fullscreen) {
+               if (config.num_outputs != 1 || !config.outputs)
                        goto err_outputs;
 
                output = wayland_output_create_for_config(b,
-                                                         
&new_config.outputs[0],
+                                                         &config.outputs[0],
                                                          1, 0, 0);
                if (!output)
                        goto err_outputs;
@@ -2520,8 +2326,8 @@ backend_init(struct weston_compositor *compositor, int 
*argc, char *argv[],
        }
 
        x = 0;
-       for (count = 0; count < new_config.num_outputs; ++count) {
-               output = wayland_output_create_for_config(b, 
&new_config.outputs[count],
+       for (count = 0; count < config.num_outputs; ++count) {
+               output = wayland_output_create_for_config(b, 
&config.outputs[count],
                                                          0, x, 0);
                if (!output)
                        goto err_outputs;
@@ -2534,11 +2340,9 @@ backend_init(struct weston_compositor *compositor, int 
*argc, char *argv[],
        weston_compositor_add_key_binding(compositor, KEY_F,
                                          MODIFIER_CTRL | MODIFIER_ALT,
                                          fullscreen_binding, b);
-       wayland_backend_config_release(&new_config);
        return 0;
 
 err_outputs:
        wayland_backend_destroy(b);
-       wayland_backend_config_release(&new_config);
        return -1;
 }
diff --git a/src/compositor-wayland.h b/src/compositor-wayland.h
index ab216eb..7032f08 100644
--- a/src/compositor-wayland.h
+++ b/src/compositor-wayland.h
@@ -32,6 +32,10 @@ extern "C" {
 
 #include "compositor.h"
 
+#define WESTON_WAYLAND_BACKEND_CONFIG_VERSION 1
+
+#define WINDOW_TITLE "Weston Compositor"
+
 struct weston_wayland_backend_output_config {
        int width;
        int height;
@@ -41,6 +45,7 @@ struct weston_wayland_backend_output_config {
 };
 
 struct weston_wayland_backend_config {
+       struct weston_backend_config base;
        int use_pixman;
        int sprawl;
        char *display_name;
diff --git a/src/main.c b/src/main.c
index f034dda..f90bd7b 100644
--- a/src/main.c
+++ b/src/main.c
@@ -49,6 +49,7 @@
 
 #include "compositor-headless.h"
 #include "compositor-rdp.h"
+#include "compositor-wayland.h"
 
 static struct wl_list child_process_list;
 static struct weston_compositor *segv_compositor;
@@ -767,6 +768,212 @@ load_rdp_backend(struct weston_compositor *c, char const 
* backend,
        return ret;
 }
 
+static void
+weston_wayland_backend_config_release(struct weston_wayland_backend_config 
*new_config) {
+       int i;
+       for (i = 0; i < new_config->num_outputs; ++i) {
+               free(new_config->outputs[i].name);
+       }
+       free(new_config->cursor_theme);
+       free(new_config->display_name);
+       free(new_config->outputs);
+}
+
+/*
+ * Append a new output struct at the end of new_config.outputs and return a
+ * pointer to the newly allocated structure or NULL if fail. The allocated
+ * structure is NOT cleared nor set to default values.
+ */
+static struct weston_wayland_backend_output_config *
+weston_wayland_backend_config_add_new_output(struct 
weston_wayland_backend_config *new_config) {
+       struct weston_wayland_backend_output_config *outputs;
+       outputs = realloc(new_config->outputs,
+                         (new_config->num_outputs+1)*sizeof(struct 
weston_wayland_backend_output_config));
+       if (!outputs)
+               return NULL;
+       new_config->num_outputs += 1;
+       new_config->outputs = outputs;
+       return &(new_config->outputs[new_config->num_outputs-1]);
+}
+
+static void
+weston_wayland_backend_output_init(struct weston_wayland_backend_output_config 
*output,
+                                  struct weston_config_section *config_section,
+                                  int option_width, int option_height,
+                                  int option_scale)
+{
+       char *mode, *t, *str;
+       unsigned int slen;
+
+       weston_config_section_get_string(config_section, "name", &output->name,
+                                        NULL);
+       if (output->name) {
+               slen = strlen(output->name);
+               slen += strlen(WINDOW_TITLE " - ");
+               str = malloc(slen + 1);
+               if (str)
+                       snprintf(str, slen + 1, WINDOW_TITLE " - %s",
+                                output->name);
+               free(output->name);
+               output->name = str;
+       }
+       if (!output->name)
+               output->name = strdup(WINDOW_TITLE);
+
+       weston_config_section_get_string(config_section,
+                                        "mode", &mode, "1024x600");
+       if (sscanf(mode, "%dx%d", &output->width, &output->height) != 2) {
+               weston_log("Invalid mode \"%s\" for output %s\n",
+                          mode, output->name);
+               output->width = 1024;
+               output->height = 640;
+       }
+       free(mode);
+
+       if (option_width)
+               output->width = option_width;
+       if (option_height)
+               output->height = option_height;
+
+       weston_config_section_get_int(config_section, "scale", &output->scale, 
1);
+
+       if (option_scale)
+               output->scale = option_scale;
+
+       weston_config_section_get_string(config_section,
+                                        "transform", &t, "normal");
+       if (weston_parse_transform(t, &output->transform) < 0)
+               weston_log("Invalid transform \"%s\" for output %s\n",
+                          t, output->name);
+       free(t);
+
+}
+
+static int
+load_wayland_backend(struct weston_compositor *c, char const *backend,
+                    int *argc, char *argv[], struct weston_config *wc)
+{
+       struct weston_wayland_backend_config config = {{ 0, }};
+       struct weston_config_section *section;
+       struct weston_wayland_backend_output_config *oc;
+       int count, width, height, scale;
+       const char *section_name;
+       char *name;
+       int ret = 0;
+
+       const struct weston_option wayland_options[] = {
+               { WESTON_OPTION_INTEGER, "width", 0, &width },
+               { WESTON_OPTION_INTEGER, "height", 0, &height },
+               { WESTON_OPTION_INTEGER, "scale", 0, &scale },
+               { WESTON_OPTION_STRING, "display", 0, &config.display_name },
+               { WESTON_OPTION_BOOLEAN, "use-pixman", 0, &config.use_pixman },
+               { WESTON_OPTION_INTEGER, "output-count", 0, &count },
+               { WESTON_OPTION_BOOLEAN, "fullscreen", 0, &config.fullscreen },
+               { WESTON_OPTION_BOOLEAN, "sprawl", 0, &config.sprawl },
+       };
+
+       width = 0;
+       height = 0;
+       scale = 0;
+       config.display_name = NULL;
+       config.use_pixman = 0;
+       count = 1;
+       config.fullscreen = 0;
+       config.sprawl = 0;
+       parse_options(wayland_options,
+                     ARRAY_LENGTH(wayland_options), argc, argv);
+
+       config.base.struct_version = WESTON_WAYLAND_BACKEND_CONFIG_VERSION;
+       config.base.struct_size = sizeof(struct weston_wayland_backend_config);
+       config.cursor_size = 32;
+       config.cursor_theme = NULL;
+
+       section = weston_config_get_section(wc, "shell", NULL, NULL);
+       weston_config_section_get_string(section, "cursor-theme",
+                                        &config.cursor_theme, NULL);
+       weston_config_section_get_int(section, "cursor-size",
+                                     &config.cursor_size, 32);
+
+       if (config.sprawl) {
+               /* do nothing, everything is already set */
+               ret = load_backend_new(c, backend, &config.base);
+               weston_wayland_backend_config_release(&config);
+               return ret;
+       }
+
+       if (config.fullscreen) {
+
+               oc = weston_wayland_backend_config_add_new_output(&config);
+
+               if (!oc)
+                       goto err_outputs;
+
+               oc->width = width;
+               oc->height = height;
+               oc->name = NULL;
+               oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+               oc->scale = 1;
+
+               ret = load_backend_new(c, backend, &config.base);
+               weston_wayland_backend_config_release(&config);
+               return ret;
+       }
+
+       section = NULL;
+       while (weston_config_next_section(wc, &section, &section_name)) {
+               if (!section_name || strcmp(section_name, "output") != 0)
+                       continue;
+               weston_config_section_get_string(section, "name", &name, NULL);
+               if (name == NULL)
+                       continue;
+
+               if (name[0] != 'W' || name[1] != 'L') {
+                       free(name);
+                       continue;
+               }
+               free(name);
+
+               oc = weston_wayland_backend_config_add_new_output(&config);
+
+               if (!oc)
+                       goto err_outputs;
+
+               weston_wayland_backend_output_init(oc, section, width,
+                                               height, scale);
+               --count;
+       }
+
+       if (!width)
+               width = 1024;
+       if (!height)
+               height = 640;
+       if (!scale)
+               scale = 1;
+       while (count > 0) {
+
+               oc = weston_wayland_backend_config_add_new_output(&config);
+
+               if (!oc)
+                       goto err_outputs;
+
+               oc->width = width;
+               oc->height = height;
+               oc->name = NULL;
+               oc->transform = WL_OUTPUT_TRANSFORM_NORMAL;
+               oc->scale = scale;
+
+               --count;
+       }
+
+       ret = load_backend_new(c, backend, &config.base);
+       weston_wayland_backend_config_release(&config);
+       return ret;
+
+err_outputs:
+       weston_wayland_backend_config_release(&config);
+       return ret;
+}
+
 static int
 load_backend(struct weston_compositor *compositor, const char *backend,
             int *argc, char **argv, struct weston_config *config)
@@ -775,11 +982,11 @@ load_backend(struct weston_compositor *compositor, const 
char *backend,
                return load_headless_backend(compositor, backend, argc, argv, 
config);
        else if (strstr(backend, "rdp-backend.so"))
                return load_rdp_backend(compositor, backend, argc, argv, 
config);
+       else if (strstr(backend, "wayland-backend.so"))
+               return load_wayland_backend(compositor, backend, argc, argv, 
config);
 #if 0
        else if (strstr(backend, "drm-backend.so"))
                return load_drm_backend(compositor, backend, argc, argv, 
config);
-       else if (strstr(backend, "wayland-backend.so"))
-               return load_wayland_backend(compositor, backend, argc, argv, 
config);
        else if (strstr(backend, "x11-backend.so"))
                return load_x11_backend(compositor, backend, argc, argv, 
config);
        else if (strstr(backend, "fbdev-backend.so"))
-- 
2.7.3

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