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| -rw-r--r-- | include/crm/common/strings_internal.h | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/include/crm/common/strings_internal.h b/include/crm/common/strings_internal.h new file mode 100644 index 0000000..cd394d9 --- /dev/null +++ b/include/crm/common/strings_internal.h @@ -0,0 +1,214 @@ +/* + * Copyright 2015-2022 the Pacemaker project contributors + * + * The version control history for this file may have further details. + * + * This source code is licensed under the GNU Lesser General Public License + * version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY. + */ + +#ifndef PCMK__STRINGS_INTERNAL__H +#define PCMK__STRINGS_INTERNAL__H + +#include <stdbool.h> // bool + +#include <glib.h> // guint, GList, GHashTable + +/* internal constants for generic string functions (from strings.c) */ + +#define PCMK__PARSE_INT_DEFAULT -1 +#define PCMK__PARSE_DBL_DEFAULT -1.0 + +/* internal generic string functions (from strings.c) */ + +enum pcmk__str_flags { + pcmk__str_none = 0, + pcmk__str_casei = 1 << 0, + pcmk__str_null_matches = 1 << 1, + pcmk__str_regex = 1 << 2, + pcmk__str_star_matches = 1 << 3, +}; + +int pcmk__scan_double(const char *text, double *result, + const char *default_text, char **end_text); +int pcmk__guint_from_hash(GHashTable *table, const char *key, guint default_val, + guint *result); +bool pcmk__starts_with(const char *str, const char *prefix); +bool pcmk__ends_with(const char *s, const char *match); +bool pcmk__ends_with_ext(const char *s, const char *match); +char *pcmk__trim(char *str); +void pcmk__add_separated_word(GString **list, size_t init_size, + const char *word, const char *separator); +int pcmk__compress(const char *data, unsigned int length, unsigned int max, + char **result, unsigned int *result_len); + +int pcmk__scan_ll(const char *text, long long *result, long long default_value); +int pcmk__scan_min_int(const char *text, int *result, int minimum); +int pcmk__scan_port(const char *text, int *port); +int pcmk__parse_ll_range(const char *srcstring, long long *start, long long *end); + +GHashTable *pcmk__strkey_table(GDestroyNotify key_destroy_func, + GDestroyNotify value_destroy_func); +GHashTable *pcmk__strikey_table(GDestroyNotify key_destroy_func, + GDestroyNotify value_destroy_func); +GHashTable *pcmk__str_table_dup(GHashTable *old_table); + +/*! + * \internal + * \brief Get a string value with a default if NULL + * + * \param[in] s String to return if non-NULL + * \param[in] default_value String (or NULL) to return if \p s is NULL + * + * \return \p s if \p s is non-NULL, otherwise \p default_value + */ +static inline const char * +pcmk__s(const char *s, const char *default_value) +{ + return (s == NULL)? default_value : s; +} + +/*! + * \internal + * \brief Create a hash table with integer keys + * + * \param[in] value_destroy_func Function to free a value + * + * \return Newly allocated hash table + * \note It is the caller's responsibility to free the result, using + * g_hash_table_destroy(). + */ +static inline GHashTable * +pcmk__intkey_table(GDestroyNotify value_destroy_func) +{ + return g_hash_table_new_full(g_direct_hash, g_direct_equal, NULL, + value_destroy_func); +} + +/*! + * \internal + * \brief Insert a value into a hash table with integer keys + * + * \param[in,out] hash_table Table to insert into + * \param[in] key Integer key to insert + * \param[in] value Value to insert + * + * \return Whether the key/value was already in the table + * \note This has the same semantics as g_hash_table_insert(). If the key + * already exists in the table, the old value is freed and replaced. + */ +static inline gboolean +pcmk__intkey_table_insert(GHashTable *hash_table, int key, gpointer value) +{ + return g_hash_table_insert(hash_table, GINT_TO_POINTER(key), value); +} + +/*! + * \internal + * \brief Look up a value in a hash table with integer keys + * + * \param[in] hash_table Table to check + * \param[in] key Integer key to look for + * + * \return Value in table for \key (or NULL if not found) + */ +static inline gpointer +pcmk__intkey_table_lookup(GHashTable *hash_table, int key) +{ + return g_hash_table_lookup(hash_table, GINT_TO_POINTER(key)); +} + +/*! + * \internal + * \brief Remove a key/value from a hash table with integer keys + * + * \param[in,out] hash_table Table to modify + * \param[in] key Integer key of entry to remove + * + * \return Whether \p key was found and removed from \p hash_table + */ +static inline gboolean +pcmk__intkey_table_remove(GHashTable *hash_table, int key) +{ + return g_hash_table_remove(hash_table, GINT_TO_POINTER(key)); +} + +gboolean pcmk__str_in_list(const gchar *s, const GList *lst, uint32_t flags); + +bool pcmk__strcase_any_of(const char *s, ...) G_GNUC_NULL_TERMINATED; +bool pcmk__str_any_of(const char *s, ...) G_GNUC_NULL_TERMINATED; +bool pcmk__char_in_any_str(int ch, ...) G_GNUC_NULL_TERMINATED; + +int pcmk__strcmp(const char *s1, const char *s2, uint32_t flags); +int pcmk__numeric_strcasecmp(const char *s1, const char *s2); +void pcmk__str_update(char **str, const char *value); +void pcmk__g_strcat(GString *buffer, ...) G_GNUC_NULL_TERMINATED; + +static inline bool +pcmk__str_eq(const char *s1, const char *s2, uint32_t flags) +{ + return pcmk__strcmp(s1, s2, flags) == 0; +} + +// Like pcmk__add_separated_word() but using a space as separator +static inline void +pcmk__add_word(GString **list, size_t init_size, const char *word) +{ + return pcmk__add_separated_word(list, init_size, word, " "); +} + +/* Correctly displaying singular or plural is complicated; consider "1 node has" + * vs. "2 nodes have". A flexible solution is to pluralize entire strings, e.g. + * + * if (a == 1) { + * crm_info("singular message"): + * } else { + * crm_info("plural message"); + * } + * + * though even that's not sufficient for all languages besides English (if we + * ever desire to do translations of output and log messages). But the following + * convenience macros are "good enough" and more concise for many cases. + */ + +/* Example: + * crm_info("Found %d %s", nentries, + * pcmk__plural_alt(nentries, "entry", "entries")); + */ +#define pcmk__plural_alt(i, s1, s2) (((i) == 1)? (s1) : (s2)) + +// Example: crm_info("Found %d node%s", nnodes, pcmk__plural_s(nnodes)); +#define pcmk__plural_s(i) pcmk__plural_alt(i, "", "s") + +static inline int +pcmk__str_empty(const char *s) +{ + return (s == NULL) || (s[0] == '\0'); +} + +static inline char * +pcmk__itoa(int an_int) +{ + return crm_strdup_printf("%d", an_int); +} + +static inline char * +pcmk__ftoa(double a_float) +{ + return crm_strdup_printf("%f", a_float); +} + +static inline char * +pcmk__ttoa(time_t epoch_time) +{ + return crm_strdup_printf("%lld", (long long) epoch_time); +} + +// note this returns const not allocated +static inline const char * +pcmk__btoa(bool condition) +{ + return condition? "true" : "false"; +} + +#endif /* PCMK__STRINGS_INTERNAL__H */ |