From 225972a9480eaff05806f4353972cad2fd0adc5c Mon Sep 17 00:00:00 2001
From: jimmy <jimmychang851129@gmail.com>
Date: Wed, 1 May 2024 01:05:53 +0800
Subject: [PATCH] [Enhancement] search platform list to find a command

declare platformlist in tldr.h so everyfile can access platformlist
---
 CHANGELOG.md |  1 +
 src/parser.c | 33 ++++++++++++++++++++++-----------
 src/tldr.h   |  2 ++
 3 files changed, 25 insertions(+), 11 deletions(-)

diff --git a/CHANGELOG.md b/CHANGELOG.md
index e8d2ea1..abb6ec2 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -24,6 +24,7 @@ will be removed after two major releases.
 - Fix updating a local database
 - Prevent freezing of auto-completion in zsh
 - Fix print usage of flags
+- Search a command in all platforms if it is not found in user's platform.
 
 ### Removed
 
diff --git a/src/parser.c b/src/parser.c
index fa12cac..7cc3116 100644
--- a/src/parser.c
+++ b/src/parser.c
@@ -12,6 +12,9 @@
 #include <string.h>
 #include <dirent.h>
 #include <sys/stat.h>
+#include <stdbool.h>
+
+const char * const platformlist[PLATFORM_CNT] = {"linux", "common", "osx", "sunos", "windows"};
 
 int
 construct_url(char *buf, size_t buflen, char const *input, char const *platform)
@@ -149,6 +152,23 @@ parse_tldrpage(char const *input, int color_enabled)
     return 0;
 }
 
+bool
+IsPageInPlatformList(char const* const command, char const * const curPlatform, /* out */char **output)
+{
+    char url[URLBUFSIZ];
+    construct_url(url, URLBUFSIZ, command, curPlatform);
+    download_content(url, output, 0);
+    if(*output == NULL) {
+        for(int i = 0 ; i < PLATFORM_CNT ; i++) {
+            if(strcmp(platformlist[i], curPlatform) == 0)  continue;
+            construct_url(url, URLBUFSIZ, command, platformlist[i]);
+            download_content(url, output, 0);
+            if(*output != NULL)  break;
+        }
+    }
+    return *output != NULL;
+}
+
 int
 print_tldrpage(char const *input, char const *poverride, int color_enabled)
 {
@@ -206,19 +226,10 @@ print_tldrpage(char const *input, char const *poverride, int color_enabled)
 
     if (getenv(PREVENT_UPDATE_ENV_VARIABLE))
         return 1;
-
-    construct_url(url, URLBUFSIZ, input, platform);
-
-    /* make clang's static analyzer happy */
     output = NULL;
-    download_content(url, &output, 0);
-    if (output == NULL) {
-        construct_url(url, URLBUFSIZ, input, "common");
-        download_content(url, &output, 0);
-        if (output == NULL)
-            return 1;
+    if(IsPageInPlatformList(input, platform, &output) == false) {
+        return 1;
     }
-
     parse_tldrpage(output, color_enabled);
 
     free(output);
diff --git a/src/tldr.h b/src/tldr.h
index 74d0e22..a4b9c3b 100644
--- a/src/tldr.h
+++ b/src/tldr.h
@@ -53,6 +53,8 @@
 #define ANSI_BOLD_ON                            "\x1b[1m"
 #define ANSI_BOLD_OFF                           "\x1b[22m"
 
+#define PLATFORM_CNT 5
+extern const char * const platformlist[PLATFORM_CNT];
 /* local.c */
 long        check_localdate         (void);
 int         update_localdate        (void);