text_hl.h

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#pragma once
 
#include <stddef.h>
#include <stdint.h>
 
#ifdef __cplusplus
extern "C" {
#endif

#define TEXT_HL_LABEL_CELLS 24u

#define TEXT_HL_CLASS_ROWS(X)                                              \
    X(TEXT,     "tx", UI_C_TEXT)       /* plain text */                    \
    X(HEADING,  "hd", UI_C_ACCENT)     /* a title or section heading */    \
    X(LABEL,    "lb", UI_C_TEXT_DIM)   /* "Label:" or "name =" */          \
    X(OK,       "ok", UI_C_OK)         /* a word of the OK list */         \
    X(FAIL,     "fl", UI_C_DANGER)     /* a word of the FAIL list */       \
    X(WARN,     "wn", UI_C_WARN)       /* a word of the WARN list */       \
    X(VOLT,     "vo", UI_C_VOLT)       /* a number in V or mV */           \
    X(CURR,     "cu", UI_C_CURR)       /* a number in A or mA */           \
    X(POWER,    "pw", UI_C_POWER)      /* a number in W */                 \
    X(RATE,     "rt", UI_C_RPM)        /* a number in rpm or Hz */         \
    X(UNIT,     "un", UI_C_TEAL)       /* a number in another unit */      \
    X(COMMENT,  "cm", UI_C_TEXT_FAINT) /* "#" to the line's end */         \
    X(HEX,      "hx", UI_C_TEXT_DIM)   /* register, checksum, journal */   \
    X(KEY,      "ky", UI_C_TEXT_DIM)   /* a JSON key */                    \
    X(NUMBER,   "nm", UI_C_TEAL)       /* a JSON number */                 \
    X(LITERAL,  "lt", UI_C_LILAC)      /* JSON true, false, null */        \
    X(PUNCT,    "pu", UI_C_TEXT_FAINT) /* JSON marks, CSV delimiters */    \
    X(CSV_HEAD, "ch", UI_C_ACCENT)     /* a CSV header cell */

#define TEXT_HL_CLASS_ENUM(name, css, role) TEXT_HL_##name,

typedef enum {
    TEXT_HL_CLASS_ROWS(TEXT_HL_CLASS_ENUM)
    TEXT_HL_CLASSES  
} text_hl_class_t;

typedef enum {
    TEXT_HL_KIND_TEXT = 0,   
    TEXT_HL_KIND_JSON = 1,   
    TEXT_HL_KIND_CSV = 2,    
    TEXT_HL_KIND_PLAIN = 3,  
} text_hl_kind_t;

typedef struct {
    const char *const *ok;    
    size_t ok_n;              
    const char *const *fail;  
    size_t fail_n;            
    const char *const *warn;  
    size_t warn_n;            
} text_hl_words_t;

typedef struct {
    const char *unit;     
    text_hl_class_t cls;  
} text_hl_unit_t;

#define TEXT_HL_UNIT_COUNT 20u

extern const text_hl_unit_t text_hl_units[TEXT_HL_UNIT_COUNT];

typedef struct {
    uint32_t start;  
    uint32_t len;    
    uint8_t cls;     
} text_hl_span_t;

size_t text_hl_line(const char *line, size_t len, size_t line_no,
                    text_hl_kind_t kind, const text_hl_words_t *words,
                    text_hl_span_t *out, size_t cap);

text_hl_kind_t text_hl_kind_of(const char *name);

const char *text_hl_word_core(const char *s, size_t *len);

const char *text_hl_class_css(text_hl_class_t cls);

text_hl_class_t text_hl_unit_class(const char *unit, size_t len);
 
#ifdef __cplusplus
}
#endif