79 lines
1.8 KiB
C
79 lines
1.8 KiB
C
#include "vxBoot/builtin.h"
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#include "vxBoot/terminal.h"
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#include "vxBoot/fs/smemfs.h"
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#include <gint/bfile.h>
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#include <string.h>
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/* ls_help() : Display the hep message */
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static void ls_help(void)
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{
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terminal_write(
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"NAME\n"
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" ls - list directory contents\n"
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"\n"
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"SYNOPSIS\n"
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" ls [-h|--help]\n"
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"\n"
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"DESCRIPTION\n"
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" List file information about FILEs (from the root directory only). The"
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" display is inspired from the utilitary `tree` in UNIX environment.\n"
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"\n"
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" -h,--help\n"
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" Display this help message\n"
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);
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}
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/* inode_walk() : walk onto the filesystem and display files */
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static void inode_walk(struct smemfs_inode *inode, int level, uint32_t bitmap)
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{
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const char *records;
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if (inode == NULL)
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return;
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/* handle indentation */
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for (int i = 0; i < level; ++i) {
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records = "\t";
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if ((bitmap & (1 << i)) != 0)
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records = "|\t";
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terminal_write(records);
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}
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/* handle file name and sibling dependencies */
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records = "|-- (%x) %s";
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bitmap |= 1 << level;
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if (inode->sibling == NULL) {
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records = "`-- (%x) %s";
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bitmap &= ~(1 << level);
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}
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terminal_write(records, inode->type, inode->name);
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/* handle file type */
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if (inode->type == BFile_Type_Directory) {
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terminal_write(":\n");
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inode_walk(inode->child, level + 1, bitmap);
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inode_walk(inode->sibling, level, bitmap);
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return;
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}
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terminal_write("\n");
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inode_walk(inode->sibling, level, bitmap);
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}
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/* ls_main() : entry of the "ls" builtin */
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int ls_main(int argc, char **argv)
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{
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if (smemfs_superblock.fake_root_inode != SMEMFS_FAKE_ROOT_INODE) {
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terminal_write("smemfs not mounted !\n");
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return (84);
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}
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if (argc > 1 && strcmp(argv[1], "-help") == 0) {
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ls_help();
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return (0);
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}
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terminal_write("/:\n");
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inode_walk(smemfs_superblock.root_inode, 0, 0x00000000);
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return (0);
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}
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