src/shared/format-table.h

   1 /* SPDX-License-Identifier: LGPL-2.1+ */
   2 #pragma once
   3
   4 #include <stdbool.h>
   5 #include <stdio.h>
   6 #include <sys/types.h>
   7
   8 #include "json.h"
   9 #include "macro.h"
  10
  11 typedef enum TableDataType {
  12         TABLE_EMPTY,
  13         TABLE_STRING,
  14         TABLE_STRV,
  15         TABLE_PATH,
  16         TABLE_BOOLEAN,
  17         TABLE_TIMESTAMP,
  18         TABLE_TIMESTAMP_UTC,
  19         TABLE_TIMESTAMP_RELATIVE,
  20         TABLE_TIMESPAN,
  21         TABLE_TIMESPAN_MSEC,
  22         TABLE_SIZE,
  23         TABLE_BPS,
  24         TABLE_INT,
  25         TABLE_INT8,
  26         TABLE_INT16,
  27         TABLE_INT32,
  28         TABLE_INT64,
  29         TABLE_UINT,
  30         TABLE_UINT8,
  31         TABLE_UINT16,
  32         TABLE_UINT32,
  33         TABLE_UINT64,
  34         TABLE_PERCENT,
  35         TABLE_IFINDEX,
  36         TABLE_IN_ADDR,  /* Takes a union in_addr_union (or a struct in_addr) */
  37         TABLE_IN6_ADDR, /* Takes a union in_addr_union (or a struct in6_addr) */
  38         _TABLE_DATA_TYPE_MAX,
  39
  40         /* The following are not really data types, but commands for table_add_cell_many() to make changes to
  41          * a cell just added. */
  42         TABLE_SET_MINIMUM_WIDTH,
  43         TABLE_SET_MAXIMUM_WIDTH,
  44         TABLE_SET_WEIGHT,
  45         TABLE_SET_ALIGN_PERCENT,
  46         TABLE_SET_ELLIPSIZE_PERCENT,
  47         TABLE_SET_COLOR,
  48         TABLE_SET_URL,
  49         TABLE_SET_UPPERCASE,
  50
  51         _TABLE_DATA_TYPE_INVALID = -1,
  52 } TableDataType;
  53
  54 /* PIDs are just 32bit signed integers on Linux */
  55 #define TABLE_PID TABLE_INT32
  56 assert_cc(sizeof(pid_t) == sizeof(int32_t));
  57
  58 /* UIDs/GIDs are just 32bit unsigned integers on Linux */
  59 #define TABLE_UID TABLE_UINT32
  60 #define TABLE_GID TABLE_UINT32
  61 assert_cc(sizeof(uid_t) == sizeof(uint32_t));
  62 assert_cc(sizeof(gid_t) == sizeof(uint32_t));
  63
  64 typedef struct Table Table;
  65 typedef struct TableCell TableCell;
  66
  67 Table *table_new_internal(const char *first_header, ...) _sentinel_;
  68 #define table_new(...) table_new_internal(__VA_ARGS__, NULL)
  69 Table *table_new_raw(size_t n_columns);
  70 Table *table_unref(Table *t);
  71
  72 DEFINE_TRIVIAL_CLEANUP_FUNC(Table*, table_unref);
  73
  74 int table_add_cell_full(Table *t, TableCell **ret_cell, TableDataType type, const void *data, size_t minimum_width, size_t maximum_width, unsigned weight, unsigned align_percent, unsigned ellipsize_percent);
  75 static inline int table_add_cell(Table *t, TableCell **ret_cell, TableDataType type, const void *data) {
  76         return table_add_cell_full(t, ret_cell, type, data, (size_t) -1, (size_t) -1, (unsigned) -1, (unsigned) -1, (unsigned) -1);
  77 }
  78 int table_add_cell_stringf(Table *t, TableCell **ret_cell, const char *format, ...) _printf_(3, 4);
  79
  80 int table_fill_empty(Table *t, size_t until_column);
  81
  82 int table_dup_cell(Table *t, TableCell *cell);
  83
  84 int table_set_minimum_width(Table *t, TableCell *cell, size_t minimum_width);
  85 int table_set_maximum_width(Table *t, TableCell *cell, size_t maximum_width);
  86 int table_set_weight(Table *t, TableCell *cell, unsigned weight);
  87 int table_set_align_percent(Table *t, TableCell *cell, unsigned percent);
  88 int table_set_ellipsize_percent(Table *t, TableCell *cell, unsigned percent);
  89 int table_set_color(Table *t, TableCell *cell, const char *color);
  90 int table_set_url(Table *t, TableCell *cell, const char *url);
  91 int table_set_uppercase(Table *t, TableCell *cell, bool b);
  92
  93 int table_update(Table *t, TableCell *cell, TableDataType type, const void *data);
  94
  95 int table_add_many_internal(Table *t, TableDataType first_type, ...);
  96 #define table_add_many(t, ...) table_add_many_internal(t, __VA_ARGS__, _TABLE_DATA_TYPE_MAX)
  97
  98 void table_set_header(Table *table, bool b);
  99 void table_set_width(Table *t, size_t width);
 100 void table_set_cell_height_max(Table *t, size_t height);
 101 int table_set_empty_string(Table *t, const char *empty);
 102 int table_set_display(Table *t, size_t first_column, ...);
 103 int table_set_sort(Table *t, size_t first_column, ...);
 104 int table_set_reverse(Table *t, size_t column, bool b);
 105
 106 int table_print(Table *t, FILE *f);
 107 int table_format(Table *t, char **ret);
 108
 109 static inline TableCell* TABLE_HEADER_CELL(size_t i) {
 110         return SIZE_TO_PTR(i + 1);
 111 }
 112
 113 size_t table_get_rows(Table *t);
 114 size_t table_get_columns(Table *t);
 115
 116 TableCell *table_get_cell(Table *t, size_t row, size_t column);
 117
 118 const void *table_get(Table *t, TableCell *cell);
 119 const void *table_get_at(Table *t, size_t row, size_t column);
 120
 121 int table_to_json(Table *t, JsonVariant **ret);
 122 int table_print_json(Table *t, FILE *f, JsonFormatFlags json_flags);
 123
 124 #define table_log_add_error(r) \
 125         log_error_errno(r, "Failed to add cell(s) to table: %m")