[2] | 1 | //----------------------------------------------------------- |
---|
| 2 | // Copyright Christian Arnault LAL-Orsay CNRS |
---|
| 3 | // arnault@lal.in2p3.fr |
---|
| 4 | // See the complete license in cmt_license.txt "http://www.cecill.info". |
---|
| 5 | //----------------------------------------------------------- |
---|
| 6 | |
---|
| 7 | #ifndef __cmt_awk_h__ |
---|
| 8 | #define __cmt_awk_h__ |
---|
| 9 | |
---|
| 10 | #include "cmt_std.h" |
---|
| 11 | #include "cmt_string.h" |
---|
| 12 | #include "cmt_regexp.h" |
---|
| 13 | |
---|
| 14 | //------------------------------------------------ |
---|
| 15 | // |
---|
| 16 | // Emulation of the awk program. |
---|
| 17 | // |
---|
| 18 | // The run method reads the specified file, and applies the |
---|
| 19 | // <filter> virtual method onto each selected line. It returns |
---|
| 20 | // a condition (see below) |
---|
| 21 | // |
---|
| 22 | // o empty lines are ignored |
---|
| 23 | // o when the optional pattern is specified, only lines matching it |
---|
| 24 | // are considered. |
---|
| 25 | // |
---|
| 26 | // The virtual <begin> method is applied before any filter |
---|
| 27 | // The virtual <filter> method is applied onto each line |
---|
| 28 | // The virtual <end> method is applied after all filters |
---|
| 29 | // |
---|
| 30 | // The condition (one of "ok", "stopped" or "failed") will be |
---|
| 31 | // generated if : |
---|
| 32 | // o everything run well (ok) |
---|
| 33 | // o the <stop> method is called (stopped) |
---|
| 34 | // o an error occurred or the <abort> method is called (failed) |
---|
| 35 | // |
---|
| 36 | // State variables are maintained for derived awk filters |
---|
| 37 | // |
---|
| 38 | // m_line_number the current line number (empty lines |
---|
| 39 | // are counted) |
---|
| 40 | // |
---|
| 41 | // m_continuation_allowed when true, take into account the |
---|
| 42 | // trailing backslashes, so as to |
---|
| 43 | // first accumulate continued lines |
---|
| 44 | // into one |
---|
| 45 | // |
---|
| 46 | // Derived classes: |
---|
| 47 | // ---------------- |
---|
| 48 | // |
---|
| 49 | // FAwk : scans a file |
---|
| 50 | // |
---|
| 51 | // State variables: |
---|
| 52 | // |
---|
| 53 | // m_dir_name the path of the currently read file |
---|
| 54 | // m_file_name the name of the currently read file |
---|
| 55 | // |
---|
| 56 | // PAwk : execute a command and scans its output |
---|
| 57 | // |
---|
| 58 | //------------------------------------------------ |
---|
| 59 | class Awk |
---|
| 60 | { |
---|
| 61 | public: |
---|
| 62 | typedef enum {ok, stopped, failed} condition; |
---|
| 63 | Awk (); |
---|
| 64 | virtual ~Awk (); |
---|
| 65 | condition run (const cmt_string& text, const cmt_string& pattern = ""); |
---|
| 66 | condition run (const cmt_string& text, const cmt_regexp& expression); |
---|
| 67 | void stop (); |
---|
| 68 | void abort (); |
---|
| 69 | void allow_continuation (); |
---|
| 70 | condition get_last_condition () const; |
---|
| 71 | |
---|
| 72 | virtual void begin (); |
---|
| 73 | virtual void filter (const cmt_string& line); |
---|
| 74 | virtual void end (); |
---|
| 75 | |
---|
| 76 | void inc_line_number (); |
---|
| 77 | |
---|
| 78 | protected: |
---|
| 79 | int m_line_number; |
---|
| 80 | condition m_condition; |
---|
| 81 | bool m_continuation_allowed; |
---|
| 82 | }; |
---|
| 83 | |
---|
| 84 | class FAwk : public Awk |
---|
| 85 | { |
---|
| 86 | public: |
---|
| 87 | condition run (const cmt_string& file_name, const cmt_string& pattern = ""); |
---|
| 88 | condition run (const cmt_string& text, const cmt_regexp& expression); |
---|
| 89 | protected: |
---|
| 90 | cmt_string m_dir_name; |
---|
| 91 | cmt_string m_file_name; |
---|
| 92 | }; |
---|
| 93 | |
---|
| 94 | class PAwk : public Awk |
---|
| 95 | { |
---|
| 96 | public: |
---|
| 97 | condition run (const cmt_string& command, const cmt_string& pattern = ""); |
---|
| 98 | condition run (const cmt_string& text, const cmt_regexp& expression); |
---|
| 99 | }; |
---|
| 100 | |
---|
| 101 | /** |
---|
| 102 | * This scans a path and looks for CMT packages. |
---|
| 103 | * Whenever it finds one, it applies the specified actor to it. |
---|
| 104 | */ |
---|
| 105 | class PathScanner |
---|
| 106 | { |
---|
| 107 | public: |
---|
| 108 | class actor |
---|
| 109 | { |
---|
| 110 | public: |
---|
| 111 | virtual void run (const cmt_string& package, |
---|
| 112 | const cmt_string& version, |
---|
| 113 | const cmt_string& path) |
---|
| 114 | { |
---|
| 115 | } |
---|
| 116 | }; |
---|
| 117 | |
---|
| 118 | PathScanner (); |
---|
| 119 | bool scan_path (const cmt_string& path, actor& a); |
---|
| 120 | bool scan_package (const cmt_string& path, const cmt_string& package); |
---|
| 121 | |
---|
| 122 | private: |
---|
| 123 | void scan_path (const cmt_string& path, int level, actor& a); |
---|
| 124 | |
---|
| 125 | bool _running; |
---|
| 126 | int _level; |
---|
| 127 | }; |
---|
| 128 | |
---|
| 129 | |
---|
| 130 | #endif |
---|