66 lines
1.8 KiB
Groff
66 lines
1.8 KiB
Groff
.TH "KDK_PACKAGE_GET_VERSION" 3 "Mon Sep 18 2023" "Linux Programmer's Manual" \"
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.SH NAME
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kdk_package_get_version - 获取系统中指定包的版本号
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.SH SYNOPSIS
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.nf
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.B #include <libkynetinfo.h>
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.sp
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.BI "extern char* kdk_package_get_version(const char *"name ");"
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.sp
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Link with \fI\-lkynetinfo\fP.
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.SH "Detailed Description"
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The main function of the interface is to obtain the version number of the specified package in the system.
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.PP
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The argument
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.I name
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is the package name.
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.SH "RETURN VALUE"
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On success, returns the version of type char *; The returned string needs to be released by
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.I free
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.PP
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On error, return
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.BR NULL.
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.SH EXAMPLES
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.EX
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#include "libkypackages.h"
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#include <stdio.h>
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static void print_package(kdk_package_t *package)
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{
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printf("包名：%s\t", package->name);
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printf("版本号：%s\t", package->version);
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printf("包类型：%s\t", package->section);
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printf("包状态：%s\t", package->status);
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printf("包大小：%lu\n", package->size_kb);
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}
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int main()
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{
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kdk_package_list *list = kdk_package_get_packagelist();
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printf("系统中一共%u个软件包\n", list->nums);
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for (size_t i = 0; i < list->nums; i ++)
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{
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print_package(list->list[i]);
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}
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kdk_package_free_packagelist(list);
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printf("Evolution是否安装：%s\n", kdk_package_is_installed("evolution", NULL) == 1 ? "是" : "否");
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char *version = kdk_package_get_version("evolution");
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printf("Evolution版本号：%s\n", version);
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free(version);
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return 0;
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}
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.SH "CONFORMING TO"
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These functions are as per the withdrawn POSIX.1e draft specification.
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The following functions are Linux extensions:
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.BR kdk_package_get_packagelist (),
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.BR kdk_package_free_packagelist ()
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and
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.BR kdk_package_is_installed ().
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.SH "SEE ALSO"
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.BR kdk_package_get_packagelist (3),
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.BR kdk_package_free_packagelist (3)
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and
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.BR kdk_package_is_installed (3). |