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libgweather 套件實例

  1. 緣由：libgweather 套件下載氣象資料，顯示於 gnome 的時鐘面板，但指定的氣象資料網站變動就無法取得氣象資料。
  2. 下載 SRPM 套件 
    [dywang@dywmac ~]$ cd rpmbuild
[dywang@dywmac rpmbuild]$ wget https://li.nux.ro/download/nux/tmp/\
libgweather6/x86_64/libgweather-2.28.0-6.el6.nux.src.rpm
  3. 安裝 SRPM 套件 
    [dywang@dywmac rpmbuild]$ rpm -ivh libgweather-2.28.0-6.el6.nux.src.rpm
  4. 查看安裝的所有檔案。 
    [dywang@dywmac SOURCES]$ rpm -qpl ../libgweather-2.28.0-6.el6.nux.src.rpm 
better-weather-in-montreal.patch
changeprovider.patch
gettext-not-xml.patch
libgweather-2.28.0.tar.bz2
libgweather-add-jerusalem-location.patch
libgweather-translations.patch
libgweather-translations2.patch
libgweather.spec
  5. 查看程式主要的打包壓縮檔。 
    [dywang@dywmac SOURCES]$ ls libgweather-2.28.0.tar.bz2 
libgweather-2.28.0.tar.bz2
  6. 解壓縮原始碼 tarball，產生 libgweather-2.28.0 目錄，存放原始碼。 
    [dywang@dywmac SOURCES]$ tar jxvf libgweather-2.28.0.tar.bz2
  7. 查看 libgweather-2.28.0 目錄內的檔案。 
    [dywang@dywmac SOURCES]$ ls libgweather-2.28.0
acinclude.m4  config.h       configure.in  INSTALL      MAINTAINERS    NEWS
aclocal.m4    config.h.in    COPYING       install-sh   Makefile       po
AUTHORS       config.log     data          libgweather  Makefile.am    po-locations
ChangeLog     config.status  depcomp       libtool      Makefile.in    python
compile       config.sub     doc           ltmain.sh    missing        README
config.guess  configure      gtk-doc.make  m4           mkinstalldirs  stamp-h1
  8. 進入暫存目錄 tmp，解開原始 src.rpm，方便做修改的比對。 
    [dywang@dywmac SOURCES]$ cd ../tmp/
[dywang@dywmac tmp]$ rm ./* -rf
[dywang@dywmac tmp]$ rpm2cpio ../libgweather-2.28.0-6.el6.nux.src.rpm | cpio -idvm
  9. 暫存目錄下解開 bgweather-2.28.0.tar.bz2。 
    [dywang@dywmac tmp]$ tar jxvf libgweather-2.28.0.tar.bz2
  10. 查看修改了哪些檔案？ 
    [dywang@dywmac SOURCES]$ diff -qr ../tmp/libgweather-2.28.0 libgweather-2.28.0/ | grep differ
Files ../tmp/libgweather-2.28.0/configure and libgweather-2.28.0/configure differ
Files ../tmp/libgweather-2.28.0/configure.in and libgweather-2.28.0/configure.in differ
Files ../tmp/libgweather-2.28.0/data/Locations.xml.in and libgweather-2.28.0/data/Locations.xml.in differ
Files ../tmp/libgweather-2.28.0/libgweather/gweather-gconf.c and libgweather-2.28.0/libgweather/gweather-gconf.c differ
Files ../tmp/libgweather-2.28.0/libgweather/gweather.schemas.in and libgweather-2.28.0/libgweather/gweather.schemas.in differ
Files ../tmp/libgweather-2.28.0/libgweather/weather-metar.c and libgweather-2.28.0/libgweather/weather-metar.c differ
Files ../tmp/libgweather-2.28.0/po/zh_TW.po and libgweather-2.28.0/po/zh_TW.po differ
  11. 修改 RPM spec 規格檔，版本加入 dyw，取消 patch100 直接修改檔案，安裝後修改 gconf 的預設時區資訊。 
    [dywang@dywmac tmp]$ cd ../SOURCES/
[dywang@dywmac SOURCES]$ vim ../SPECS/libgweather.spec 
[dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather.spec ../SPECS/libgweather.spec
--- ../tmp/libgweather.spec	2016-08-25 15:56:19.000000000 +0800
+++ ../SPECS/libgweather.spec	2018-09-08 19:50:22.217329228 +0800
@@ -1,13 +1,13 @@
 Name:           libgweather
 Version:        2.28.0
-Release:        6%{?dist}
+Release:        6%{?dist}.dyw
 Summary:        A library for weather information
 
 Group:          System Environment/Libraries
 License:        GPLv2+
 URL:            http://www.gnome.org
 Source0:        http://download.gnome.org/sources/libgweather/2.28/%{name}-%{version}.tar.bz2
-Patch100:       changeprovider.patch
+#Patch100:       libgweather-2.28.0-metar.patch
 
 
 BuildRoot:      %{_tmppath}/%{name}-%{version}-%{release}-root-%(%{__id_u} -n)
@@ -63,7 +63,7 @@
 %patch2 -p1 -b .translations
 %patch3 -p2 -b .translations2
 %patch4 -p1 -b .jerusalem
-%patch100 -p0 -b .changeprovider
+#%patch100 -p0 -b .libgweather-2.28.0-metar
 
 gtkdocize
 autoreconf -i -f
@@ -87,6 +87,7 @@
 /sbin/ldconfig
 export GCONF_CONFIG_SOURCE=`gconftool-2 --get-default-source`
 gconftool-2 --makefile-install-rule %{_sysconfdir}/gconf/schemas/gweather.schemas > /dev/null || :
+sed -ri 's|(<stringvalue>&lt;location).*(</stringvalue>)$|\1 name=\&quot;\&quot; city=\&quot;\
+Taichung\&quot; timezone=\&quot;Asia/Taipei\&quot; latitude=\&quot;24.264668\&quot; longitude=\
+\&quot;120.620583\&quot; code=\&quot;RCMQ\&quot; current=\&quot;true\&quot;\&gt;\2|g' \
+/etc/gconf/gconf.xml.defaults/%gconf-tree.xml
 
 %pre
 if [ "$1" -gt 1 ]; then
  12. 修改預設使用公制單位。 
    [dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather-2.28.0/configure libgweather-2.28.0/configure
--- ../tmp/libgweather-2.28.0/configure	2009-09-22 00:33:19.000000000 +0800
+++ libgweather-2.28.0/configure	2018-09-08 19:00:28.756537843 +0800
@@ -16477,7 +16477,7 @@
 if test "$gtk_ok" = "yes"; then
 
 cat >>confdefs.h <<\_ACEOF
-#define HAVE__NL_MEASUREMENT_MEASUREMENT 1
+#define HAVE__NL_MEASUREMENT_MEASUREMENT 0
 _ACEOF
 
 fi
  13. 修改原有的台灣城市名稱，並增加台中市 (Taichung)。 
    [dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather-2.28.0/data/Locations.xml.in \
libgweather-2.28.0/data/Locations.xml.in
--- ../tmp/libgweather-2.28.0/data/Locations.xml.in	2009-04-20 01:41:11.000000000 +0800
+++ libgweather-2.28.0/data/Locations.xml.in	2018-09-08 15:36:32.443791340 +0800
@@ -5481,36 +5481,49 @@
       <tz-hint>Asia/Taipei</tz-hint>
       <city>
         <!-- A city in Taiwan.
-             The name is also written "高雄巿".
+             The name is also written "高雄". RCKH
           -->
-        <_name>Kao-hsiung-shih</_name>
+        <_name>Kaohsiung</_name>
         <coordinates>22.616256 120.313329</coordinates>
         <location>
-          <name>Kao-hsiung-shih International Airport</name>
+          <name>Kaohsiung International Airport</name>
           <code>RCKH</code>
           <coordinates>22.583333 120.350000</coordinates>
         </location>
       </city>
       <city>
         <!-- A city in Taiwan.
-             The name is also written "埔頂".
+             The name is also written "台中". RCMQ
           -->
-        <_name>Pu-ting</_name>
+        <_name>Taichung</_name>
+        <coordinates>24.264667 120.620581</coordinates>
+        <location>
+          <name>Taichung International Airport</name>
+          <code>RCMQ</code>
+          <zone>CST</zone>
+          <coordinates>24.264667 120.620581</coordinates>
+        </location>
+      </city>
+      <city>
+        <!-- A city in Taiwan.
+             The name is also written "桃園". RCTP
+          -->
+        <_name>Taoyuan</_name>
         <coordinates>25.083498 121.215105</coordinates>
         <location>
-          <name>Chiang Kai Shek</name>
+          <name>Taoyuan International Airport</name>
           <code>RCTP</code>
           <coordinates>25.083333 121.216667</coordinates>
         </location>
       </city>
       <city>
         <!-- The capital of Taiwan.
-             The name is also written "臺北市".
+             The name is also written "臺北市". RCSS
           -->
-        <_name>T'ai-pei Shih</_name>
+        <_name>Taipei</_name>
         <coordinates>25.047763 121.531846</coordinates>
         <location>
-          <name>Sung-shan / T'ai-pei Shih</name>
+          <name>Sung-shan / Taipei</name>
           <code>RCSS</code>
           <coordinates>25.066667 121.550000</coordinates>
         </location>
  14. 當系統沒有設定時區等資料時，預設位置為 Taichung。 
    [dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather-2.28.0/libgweather/gweather-gconf.c \
libgweather-2.28.0/libgweather/gweather-gconf.c
--- ../tmp/libgweather-2.28.0/libgweather/gweather-gconf.c	2009-06-30 09:10:32.000000000 +0800
+++ libgweather-2.28.0/libgweather/gweather-gconf.c	2018-09-08 16:58:25.437879709 +0800
@@ -212,7 +212,7 @@
         if (strcmp ("DEFAULT_LOCATION", _("DEFAULT_LOCATION")))
             name = g_strdup (_("DEFAULT_LOCATION"));
         else
-            name = g_strdup ("Pittsburgh");
+            name = g_strdup ("Taichung");
     }
 
     code = gweather_gconf_get_string (ctx, "location1", NULL);
@@ -232,7 +232,7 @@
         if (strcmp ("DEFAULT_CODE", _("DEFAULT_CODE")))
             code = g_strdup (_("DEFAULT_CODE"));
         else
-		    code = g_strdup ("KPIT");
+		    code = g_strdup ("RCMQ");
     }
 
     zone = gweather_gconf_get_string (ctx, "location2", NULL);
  15. weather-metar.c 是取得氣象資料的主程式，直接修改程式由 www.aviationweather.gov 網站取得氣象資料，不用 patch100 變更，所以 libgweather.spec 中取消 patch100 修補。 
    [dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather-2.28.0/libgweather/weather-metar.c libgweather-2.28.0/libgweather/weather-metar.c
--- ../tmp/libgweather-2.28.0/libgweather/weather-metar.c	2009-06-04 22:41:13.000000000 +0800
+++ libgweather-2.28.0/libgweather/weather-metar.c	2018-09-07 15:29:42.487644049 +0800
@@ -510,7 +510,7 @@
 
     loc = info->location;
 
-    searchkey = g_strdup_printf ("\n%s", loc->code);
+    searchkey = g_strdup_printf ("<raw_text>%s", loc->code);
     p = strstr (msg->response_body->data, searchkey);
     g_free (searchkey);
     if (p) {
@@ -522,8 +522,8 @@
	    metar = g_strdup (p);
	success = metar_parse (metar, info);
	g_free (metar);
-    } else if (!strstr (msg->response_body->data, "National Weather Service")) {
-	/* The response doesn't even seem to have come from NWS...
+    } else if (!strstr (msg->response_body->data, "aviationweather.gov")) {
+	/* The response doesn't even seem to have come from NOAA...
	 * most likely it is a wifi hotspot login page. Call that a
	 * network error.
	 */
@@ -550,9 +550,15 @@
     }
 
     msg = soup_form_request_new (
-	"GET", "http://weather.noaa.gov/cgi-bin/mgetmetar.pl",
-	"cccc", loc->code,
-	NULL);
+		"GET", "https://www.aviationweather.gov/adds/dataserver_current/httpparam",
+		"dataSource", "metars",
+		"requestType", "retrieve",
+		"format", "xml",
+		"hoursBeforeNow", "3",
+		"mostRecent", "true",
+		"fields", "raw_text",
+		"stationString", loc->code,
+		NULL);
     soup_session_queue_message (info->session, msg, metar_finish, info);
 
     info->requests_pending++;
  16. 修改 gconf 預設位置 Taichung，code 為 RCMQ。 
    [dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather-2.28.0/libgweather/gweather-gconf.c \
libgweather-2.28.0/libgweather/gweather-gconf.c
--- ../tmp/libgweather-2.28.0/libgweather/gweather-gconf.c	2009-06-30 09:10:32.000000000 +0800
+++ libgweather-2.28.0/libgweather/gweather-gconf.c	2018-09-08 16:58:25.437879709 +0800
@@ -212,7 +212,7 @@
         if (strcmp ("DEFAULT_LOCATION", _("DEFAULT_LOCATION")))
             name = g_strdup (_("DEFAULT_LOCATION"));
         else
-            name = g_strdup ("Pittsburgh");
+            name = g_strdup ("Taichung");
     }
 
     code = gweather_gconf_get_string (ctx, "location1", NULL);
@@ -232,7 +232,7 @@
         if (strcmp ("DEFAULT_CODE", _("DEFAULT_CODE")))
             code = g_strdup (_("DEFAULT_CODE"));
         else
-		    code = g_strdup ("KPIT");
+		    code = g_strdup ("RCMQ");
     }
 
     zone = gweather_gconf_get_string (ctx, "location2", NULL);
  17. 修改語系 zh-TW 預設位置 Taichung。 
    [dywang@dywmac SOURCES]$ diff -uN ../tmp/libgweather-2.28.0/po/zh_TW.po \
libgweather-2.28.0/po/zh_TW.po
--- ../tmp/libgweather-2.28.0/po/zh_TW.po	2009-06-04 22:41:13.000000000 +0800
+++ libgweather-2.28.0/po/zh_TW.po	2018-09-08 17:12:03.395028306 +0800
@@ -38,7 +38,7 @@
 #: ../libgweather/gweather-gconf.c:212 ../libgweather/gweather-gconf.c:213
 #: ../libgweather/gweather.schemas.in.h:5
 msgid "DEFAULT_LOCATION"
-msgstr "松山/臺北"
+msgstr "Taichung"
 
 # zh_HK: msgstr "VHHH"
 # zh_TW: msgstr "RCSS"
@@ -56,7 +56,7 @@
 #: ../libgweather/gweather-gconf.c:232 ../libgweather/gweather-gconf.c:233
 #: ../libgweather/gweather.schemas.in.h:3
 msgid "DEFAULT_CODE"
-msgstr "RCSS"
+msgstr "RCMQ"
 
 #. TRANSLATOR: Change this to the zone of your default location that
 #. * corresponds to the DEFAULT_LOCATION and DEFAULT_CODE you put above.
@@ -108,7 +108,7 @@
 #: ../libgweather/gweather-gconf.c:294 ../libgweather/gweather-gconf.c:295
 #: ../libgweather/gweather.schemas.in.h:4
 msgid "DEFAULT_COORDINATES"
-msgstr "25-04N 121-33E"
+msgstr "24-26N 120-62E"
 
 #: ../libgweather/gweather-prefs.c:34 ../libgweather/gweather-prefs.c:45
 #: ../libgweather/gweather-prefs.c:60 ../libgweather/gweather-prefs.c:77
  18. 重新打包壓縮 ../libgweather-2.28.0 目錄。 
    [dywang@dywmac SOURCES]$ tar jcvf libgweather-2.28.0.tar.bz2 libgweather-2.28.0
  19. 再同時建立 RPM 及 SRPM 二進位檔字，看到產生 libgweather libgweather-devel libgweather-debuginfo 三個 RPM 檔及一個 libgweather SRPM 檔。 
    [dywang@dywmac SOURCES]$ rpmbuild -ba --clean --target=$(uname -m) ../SPECS/libgweather.spec
..................
Wrote: /home/dywang/rpmbuild/SRPMS/libgweather-2.28.0-6.el6.dyw.src.rpm
Wrote: /home/dywang/rpmbuild/RPMS/x86_64/libgweather-2.28.0-6.el6.dyw.x86_64.rpm
Wrote: /home/dywang/rpmbuild/RPMS/x86_64/libgweather-devel-2.28.0-6.el6.dyw.x86_64.rpm
Wrote: /home/dywang/rpmbuild/RPMS/x86_64/libgweather-debuginfo-2.28.0-6.el6.dyw.x86_64.rpm
Executing(%clean): /bin/sh -e /var/tmp/rpm-tmp.y1Er5Y
+ umask 022
+ cd /home/dywang/rpmbuild/BUILD
+ cd libgweather-2.28.0
+ rm -rf /home/dywang/rpmbuild/BUILDROOT/libgweather-2.28.0-6.el6.dyw.x86_64
+ exit 0
Executing(--clean): /bin/sh -e /var/tmp/rpm-tmp.MSreAY
+ umask 022
+ cd /home/dywang/rpmbuild/BUILD
+ rm -rf libgweather-2.28.0
+ exit 0