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1 | #include "mbed.h" |
2 | #include "libs/Kernel.h" | |
3 | #include "SimpleShell.h" | |
4 | #include "libs/nuts_bolts.h" | |
5 | #include "libs/utils.h" | |
6 | ||
7 | ||
8 | void SimpleShell::on_module_loaded(){ | |
9 | this->current_path = "/"; | |
10 | this->register_for_event(ON_CONSOLE_LINE_RECEIVED); | |
11 | } | |
12 | ||
13 | // When a new line is received, check if it is a command, and if it is, act upon it | |
14 | void SimpleShell::on_console_line_received( void* argument ){ | |
15 | string possible_command = *static_cast<string*>(argument); | |
16 | ||
17 | // We don't compare to a string but to a checksum of that string, this saves some space in flash memory | |
18 | unsigned short check_sum = get_checksum( possible_command.substr(0,possible_command.find_first_of(" \r\n")) ); // todo: put this method somewhere more convenient | |
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20 | // Act depending on command |
21 | switch( check_sum ){ | |
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22 | case ls_command_checksum : this->ls_command( get_arguments(possible_command)); break; |
23 | case cd_command_checksum : this->cd_command( get_arguments(possible_command)); break; | |
24 | case cat_command_checksum : this->cat_command( get_arguments(possible_command)); break; | |
25 | case play_command_checksum : this->play_command(get_arguments(possible_command)); break; | |
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26 | } |
27 | } | |
28 | ||
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29 | // Convert a path indication ( absolute or relative ) into a path ( absolute ) |
30 | string SimpleShell::absolute_from_relative( string path ){ | |
31 | if( path[0] == '/' ){ return path; } | |
32 | if( path[0] == '.' ){ return this->current_path; } | |
33 | return this->current_path + path; | |
34 | } | |
35 | ||
36 | // Act upon an ls command | |
37 | // Convert the first parameter into an absolute path, then list the files in that path | |
38 | void SimpleShell::ls_command( string parameters ){ | |
39 | string folder = this->absolute_from_relative( parameters ); | |
40 | DIR* d; | |
41 | struct dirent* p; | |
42 | d = opendir(folder.c_str()); | |
43 | if(d != NULL) { | |
44 | while((p = readdir(d)) != NULL) { this->kernel->serial->printf("%s\r\n", lc(string(p->d_name)).c_str()); } | |
45 | } else { | |
46 | this->kernel->serial->printf("Could not open directory %s \r\n", folder.c_str()); | |
47 | } | |
48 | } | |
49 | ||
50 | // Change current absolute path to provided path | |
51 | void SimpleShell::cd_command( string parameters ){ | |
52 | string folder = this->absolute_from_relative( parameters ); | |
53 | if( folder[folder.length()-1] != '/' ){ folder += "/"; } | |
54 | DIR *d; | |
55 | struct dirent *p; | |
56 | d = opendir(folder.c_str()); | |
57 | if(d == NULL) { | |
58 | this->kernel->serial->printf("Could not open directory %s \r\n", folder.c_str() ); | |
59 | }else{ | |
60 | this->current_path = folder; | |
61 | } | |
62 | } | |
63 | ||
64 | // Output the contents of a file, first parameter is the filename, second is the limit ( in number of lines to output ) | |
65 | void SimpleShell::cat_command( string parameters ){ | |
66 | ||
67 | // Get parameters ( filename and line limit ) | |
68 | string filename = this->absolute_from_relative(shift_parameter( parameters )); | |
69 | string limit_paramater = shift_parameter( parameters ); | |
70 | int limit = -1; | |
71 | if( limit_paramater != "" ){ limit = int(atof(limit_paramater.c_str())); } | |
72 | ||
73 | // Open file | |
74 | FILE *lp = fopen(filename.c_str(), "r"); | |
75 | string buffer; | |
76 | int c; | |
77 | int newlines = 0; | |
78 | ||
79 | // Print each line of the file | |
80 | while ((c = fgetc (lp)) != EOF){ | |
81 | if( char(c) == '\n' ){ newlines++; } | |
82 | this->kernel->serial->putc(c); | |
83 | if( newlines == limit ){ break; } | |
84 | }; | |
85 | fclose(lp); | |
86 | ||
87 | } | |
88 | ||
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89 | // Play a gcode file by considering each line as if it was received on the serial console |
90 | void SimpleShell::play_command( string parameters ){ | |
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92 | // Get filename |
93 | string filename = this->absolute_from_relative(shift_parameter( parameters )); | |
94 | ||
95 | // Open file | |
96 | FILE *lp = fopen(filename.c_str(), "r"); | |
97 | string buffer; | |
98 | int c; | |
99 | ||
100 | // Print each line of the file | |
101 | while ((c = fgetc (lp)) != EOF){ | |
102 | if (c == '\n'){ | |
103 | this->kernel->serial->printf("%s\n", buffer.c_str()); | |
104 | this->kernel->call_event(ON_CONSOLE_LINE_RECEIVED, &buffer); | |
105 | buffer.clear(); | |
106 | }else{ | |
107 | buffer += c; | |
108 | } | |
109 | }; | |
110 | fclose(lp); | |
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112 | |
113 | ||
114 | } |